Knowledge Graph RAG Query Engine

Graph RAG
Graph RAG is an Knowledge-enabled RAG approach to retrieve information
from Knowledge Graph on given task. Typically, this is to build
context based on entities' SubGraph related to the task.
GraphStore backed RAG vs VectorStore RAG
As we compared how Graph RAG helps in some use cases in this tutorial,
it's shown Knowledge Graph as the unique format of information could
mitigate several issues caused by the nature of the "split and
embedding" RAG approach.
Why Knowledge Graph RAG Query Engine
In Llama Index, there are two scenarios we could apply Graph RAG:
* Build Knowledge Graph from documents with Llama Index, with LLM or
  even local models, to do this, we should go for
  "KnowledgeGraphIndex".
* Leveraging existing Knowledge Graph, in this case, we should use
  "KnowledgeGraphRAGQueryEngine".
   Note, the third query engine that's related to KG in Llama Index is
   "NL2GraphQuery" or "Text2Cypher", for either exiting KG or not, it
   could be done with "KnowledgeGraphQueryEngine".
Before we start the "Knowledge Graph RAG QueryEngine" demo, let's
first get ready for basic preparation of Llama Index.
   # For OpenAI
   import os
   os.environ["OPENAI_API_KEY"] = "sk-..."
   import logging
   import sys
   logging.basicConfig(
       stream=sys.stdout, level=logging.INFO
   )  # logging.DEBUG for more verbose output
   from llama_index import (
       KnowledgeGraphIndex,
       LLMPredictor,
       ServiceContext,
       SimpleDirectoryReader,
   )
   from llama_index.storage.storage_context import StorageContext
   from llama_index.graph_stores import NebulaGraphStore
   from llama_index.llms import OpenAI
   from IPython.display import Markdown, display
   # define LLM
   # NOTE: at the time of demo, text-davinci-002 did not have rate-limit errors
   llm = OpenAI(temperature=0, model="text-davinci-002")
   service_context = ServiceContext.from_defaults(llm=llm, chunk_size_limit=512)
   INFO:numexpr.utils:Note: NumExpr detected 12 cores but "NUMEXPR_MAX_THREADS" not set, so enforcing safe limit of 8.
   INFO:numexpr.utils:NumExpr defaulting to 8 threads.
   WARNING:llama_index.indices.service_context:chunk_size_limit is deprecated, please specify chunk_size instead
   # For Azure OpenAI
   import os
   import json
   import openai
   from llama_index.llms import AzureOpenAI
   from llama_index.embeddings import OpenAIEmbedding
   from llama_index import (
       VectorStoreIndex,
       SimpleDirectoryReader,
       KnowledgeGraphIndex,
       LLMPredictor,
       ServiceContext,
   )
   from llama_index.storage.storage_context import StorageContext
   from llama_index.graph_stores import NebulaGraphStore
   from llama_index.llms import LangChainLLM
   import logging
   import sys
   from IPython.display import Markdown, display
   logging.basicConfig(
       stream=sys.stdout, level=logging.INFO
   )  # logging.DEBUG for more verbose output
   logging.getLogger().addHandler(logging.StreamHandler(stream=sys.stdout))
   openai.api_type = "azure"
   openai.api_base = "INSERT AZURE API BASE"
   openai.api_version = "2023-05-15"
   os.environ["OPENAI_API_KEY"] = "INSERT OPENAI KEY"
   openai.api_key = os.getenv("OPENAI_API_KEY")
   llm = AzureOpenAI(
       engine="INSERT DEPLOYMENT NAME",
       temperature=0,
       model="gpt-35-turbo",
   )

Knowledge Graph RAG Query Engine

   # You need to deploy your own embedding model as well as your own chat completion model
   embedding_model = OpenAIEmbedding(
       model="text-embedding-ada-002",
       deployment_name="INSERT DEPLOYMENT NAME",
       api_key=openai.api_key,
       api_base=openai.api_base,
       api_type=openai.api_type,
       api_version=openai.api_version,
   )
   service_context = ServiceContext.from_defaults(
       llm=llm,
       embed_model=embedding_model,
   )
Prepare for NebulaGraph
We take NebulaGraphStore as an example in this demo, thus before next
step to perform Graph RAG on existing KG, let's ensure we have a
running NebulaGraph with defined data schema.
This step installs the clients of NebulaGraph, and prepare contexts
that defines a NebulaGraph Graph Space.
   # Create a NebulaGraph (version 3.5.0 or newer) cluster with:
   # Option 0 for machines with Docker: `curl -fsSL nebula-up.siwei.io/install.sh | bash`
   # Option 1 for Desktop: NebulaGraph Docker Extension https://hub.docker.com/extensions/weygu/nebulagraph-dd-ext
   # If not, create it with the following commands from NebulaGraph's console:
   # CREATE SPACE llamaindex(vid_type=FIXED_STRING(256), partition_num=1, replica_factor=1);
   # :sleep 10;
   # USE llamaindex;
   # CREATE TAG entity(name string);
   # CREATE EDGE relationship(relationship string);
   # :sleep 10;
   # CREATE TAG INDEX entity_index ON entity(name(256));
   %pip install ipython-ngql nebula3-python
   os.environ["NEBULA_USER"] = "root"
   os.environ["NEBULA_PASSWORD"] = "nebula"  # default is "nebula"
   os.environ[
       "NEBULA_ADDRESS"
   ] = "127.0.0.1:9669"  # assumed we have NebulaGraph installed locally
   space_name = "llamaindex"
   edge_types, rel_prop_names = ["relationship"], [
       "relationship"
   ]  # default, could be omit if create from an empty kg
   tags = ["entity"]  # default, could be omit if create from an empty kg
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Knowledge Graph RAG Query Engine

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   WARNING: You are using pip version 21.2.4; however, version 23.2.1 is available.
   You should consider upgrading via the '/Users/loganmarkewich/llama_index/llama-index/bin/python -m pip install --upgrade pip' command.
   Note: you may need to restart the kernel to use updated packages.
Then we could instiatate a "NebulaGraphStore", in order to create a
"StorageContext"'s "graph_store" as it.
   graph_store = NebulaGraphStore(
       space_name=space_name,
       edge_types=edge_types,
       rel_prop_names=rel_prop_names,
       tags=tags,
   )
   storage_context = StorageContext.from_defaults(graph_store=graph_store)
Here, we assumed to have the same Knowledge Graph from this turtorial
Perform Graph RAG Query
Finally, let's demo how to do Graph RAG towards an existing Knowledge
Graph.
All we need to do is to use "RetrieverQueryEngine" and configure the
retriver of it to be "KnowledgeGraphRAGRetriever".
The "KnowledgeGraphRAGRetriever" performs the following steps:
* Search related Entities of the quesion/task
* Get SubGraph of those Entities (default 2-depth) from the KG
* Build Context based on the SubGraph
Please note, the way to Search related Entities could be either
Keyword extraction based or Embedding based, which is controlled by
argument "retriever_mode" of the "KnowledgeGraphRAGRetriever", and
supported options are:
* "keyword"
* "embedding"(not yet implemented)
* "keyword_embedding"(not yet implemented)
Here is the example on how to use "RetrieverQueryEngine" and
"KnowledgeGraphRAGRetriever":
   from llama_index.query_engine import RetrieverQueryEngine
   from llama_index.retrievers import KnowledgeGraphRAGRetriever
   graph_rag_retriever = KnowledgeGraphRAGRetriever(
       storage_context=storage_context,
       service_context=service_context,
       llm=llm,

Knowledge Graph RAG Query Engine

       verbose=True,
   )
   query_engine = RetrieverQueryEngine.from_args(
       graph_rag_retriever, service_context=service_context
   )
Then we can query it like:
   response = query_engine.query(
       "Tell me about Peter Quill?",
   )
   display(Markdown(f"<b>{response}</b>"))
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']
   Graph RAG context:
   The following are knowledge sequence in max depth 2 in the form of `subject predicate, object, predicate_next_hop, object_next_hop ...` extracted based on key entities as subject:
   Guardians, is member of, Guardians, was experimented on, by the High Evolutionary
   Guardians, is member of, Guardians, considered to tell, origins
   Guardians, is member of, Guardians, origins, team-up movie
   Guardians, is member of, Guardians, befriended, his fellow Batch 89 test subjects
   Guardians, is member of, Guardians, sought to enhance and anthropomorphize animal lifeforms, to create an ideal society
   Guardians, is member of, Guardians, is creator of, Rocket
   Guardians, is member of, Guardians, is, Mantis
   Guardians, is member of, Guardians, is half-sister of, Mantis
   Guardians, is member of, Guardians, is, Kraglin
   Guardians, is member of, Guardians, developed psionic abilities, after being abandoned in outer space
   Guardians, is member of, Guardians, would portray, Cosmo
   Guardians, is member of, Guardians, recalls, his past
   Guardians, is member of, Guardians
   Guardians, is member of, Guardians, focus on, third Guardians-centric film
   Guardians, is member of, Guardians, is, Rocket
   Guardians, is member of, Guardians, backstory, flashbacks
   Guardians, is member of, Guardians, is former second-in-command of, Ravagers
   Quill, is half-sister of, Mantis, is member of, Guardians
   Quill, is half-sister of, Mantis, is, Mantis
   Quill, is in a state of depression, following the appearance of a variant of his dead lover Gamora
   Quill, is half-sister of, Mantis
   Peter Quill, is leader of, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy
   Peter Quill, was raised by, a group of alien thieves and smugglers
   Peter Quill, would return to the MCU, May 2021
   Peter Quill, is leader of, Guardians of the Galaxy
   Peter Quill, is half-human, half-Celestial
   Peter Quill, was abducted from Earth, as a child
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released in, Dolby Cinema
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released on, Disney+
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy Vol. 2

Peter Quill is the leader of the Guardians of the Galaxy and the main
protagonist of the Guardians of the Galaxy films. He was raised by a

Knowledge Graph RAG Query Engine

group of alien thieves and smugglers, and was abducted from Earth as a
child. He is half-human, half-Celestial, and has the ability to wield
an energy weapon called the Infinity Stone. He is set to return to the
MCU in May 2021.
   response = await query_engine.aquery(
       "Tell me about Peter Quill?",
   )
   display(Markdown(f"<b>{response}</b>"))
   INFO:openai:message='OpenAI API response' path=https://api.openai.com/v1/completions processing_ms=611 request_id=1c07a89e18f19ac7bbc508507c2902d9 response_code=200
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']
   INFO:openai:message='OpenAI API response' path=https://api.openai.com/v1/completions processing_ms=992 request_id=6517cb63da3364acd33e816a9b3ee242 response_code=200
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']
   Graph RAG context:
   The following are knowledge sequence in max depth 2 in the form of `subject predicate, object, predicate_next_hop, object_next_hop ...` extracted based on key entities as subject:
   Guardians, is member of, Guardians, was experimented on, by the High Evolutionary
   Guardians, is member of, Guardians, considered to tell, origins
   Guardians, is member of, Guardians, origins, team-up movie
   Guardians, is member of, Guardians, befriended, his fellow Batch 89 test subjects
   Guardians, is member of, Guardians, sought to enhance and anthropomorphize animal lifeforms, to create an ideal society
   Guardians, is member of, Guardians, is creator of, Rocket
   Guardians, is member of, Guardians, is, Mantis
   Guardians, is member of, Guardians, is half-sister of, Mantis
   Guardians, is member of, Guardians, is, Kraglin
   Guardians, is member of, Guardians, developed psionic abilities, after being abandoned in outer space
   Guardians, is member of, Guardians, would portray, Cosmo
   Guardians, is member of, Guardians, recalls, his past
   Guardians, is member of, Guardians
   Guardians, is member of, Guardians, focus on, third Guardians-centric film
   Guardians, is member of, Guardians, is, Rocket
   Guardians, is member of, Guardians, backstory, flashbacks
   Guardians, is member of, Guardians, is former second-in-command of, Ravagers
   Quill, is half-sister of, Mantis, is member of, Guardians
   Quill, is half-sister of, Mantis, is, Mantis
   Quill, is in a state of depression, following the appearance of a variant of his dead lover Gamora
   Quill, is half-sister of, Mantis
   Peter Quill, is leader of, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy
   Peter Quill, was raised by, a group of alien thieves and smugglers
   Peter Quill, would return to the MCU, May 2021
   Peter Quill, is leader of, Guardians of the Galaxy

Knowledge Graph RAG Query Engine

   Peter Quill, is half-human, half-Celestial
   Peter Quill, was abducted from Earth, as a child
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released in, Dolby Cinema
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released on, Disney+
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy Vol. 2
   INFO:openai:message='OpenAI API response' path=https://api.openai.com/v1/completions processing_ms=2384 request_id=b5a7e601affa751fbc7f957f3359a238 response_code=200
Peter Quill is the leader of the Guardians of the Galaxy and the main
protagonist of the Guardians of the Galaxy films. He was raised by a
group of alien thieves and smugglers, and was abducted from Earth as a
child. He is half-human, half-Celestial, and has the ability to wield
an energy weapon called the Infinity Stone. He is set to return to the
MCU in May 2021.
Include nl2graphquery as Context in Graph RAG
The nature of (Sub)Graph RAG and nl2graphquery are different. No one
is better than the other but just when one fits more in certain type
of questions. To understand more on how they differ from the other,
see this demo comparing the two.
While in real world cases, we may not always know which approach works
better, thus, one way to best leverage KG in RAG are fetching both
retrieval results as context and letting LLM + Prompt generate answer
with them all being involved.
So, optionally, we could choose to synthesise answer from two piece of
retrieved context from KG:
* Graph RAG, the default retrieval method, which extracts subgraph
  that's related to the key entities in the question.
* NL2GraphQuery, generate Knowledge Graph Query based on query and the
  Schema of the Knowledge Graph, which is by default switched off.
We could set "with_nl2graphquery=True" to enable it like:
   graph_rag_retriever_with_nl2graphquery = KnowledgeGraphRAGRetriever(
       storage_context=storage_context,
       service_context=service_context,
       llm=llm,
       verbose=True,
       with_nl2graphquery=True,
   )
   query_engine_with_nl2graphquery = RetrieverQueryEngine.from_args(
       graph_rag_retriever_with_nl2graphquery, service_context=service_context
   )
   response = query_engine_with_nl2graphquery.query(
       "What do you know about Peter Quill?",
   )
   display(Markdown(f"<b>{response}</b>"))
   Graph Store Query:
   ```
   MATCH (p:`entity`)-[:`relationship`]->(m:`entity`) WHERE p.`entity`.`name` == 'Peter Quill'
   RETURN m.`entity`.`name`;
   ```
   Graph Store Response:
   {'m.entity.name': ['May 2021', 'as a child', 'Guardians of the Galaxy', 'a group of alien thieves and smugglers', 'half-Celestial']}
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']
   Entities processed: ['Star', 'Lord', 'Marvel', 'Quill', 'Galaxy', 'Guardians', 'Guardians of the Galaxy', 'Star-Lord', 'Peter Quill', 'Peter']

Knowledge Graph RAG Query Engine

   Graph RAG context:
   The following are knowledge sequence in max depth 2 in the form of `subject predicate, object, predicate_next_hop, object_next_hop ...` extracted based on key entities as subject:
   Guardians, is member of, Guardians, was experimented on, by the High Evolutionary
   Guardians, is member of, Guardians, considered to tell, origins
   Guardians, is member of, Guardians, origins, team-up movie
   Guardians, is member of, Guardians, befriended, his fellow Batch 89 test subjects
   Guardians, is member of, Guardians, sought to enhance and anthropomorphize animal lifeforms, to create an ideal society
   Guardians, is member of, Guardians, is creator of, Rocket
   Guardians, is member of, Guardians, is, Mantis
   Guardians, is member of, Guardians, is half-sister of, Mantis
   Guardians, is member of, Guardians, is, Kraglin
   Guardians, is member of, Guardians, developed psionic abilities, after being abandoned in outer space
   Guardians, is member of, Guardians, would portray, Cosmo
   Guardians, is member of, Guardians, recalls, his past
   Guardians, is member of, Guardians
   Guardians, is member of, Guardians, focus on, third Guardians-centric film
   Guardians, is member of, Guardians, is, Rocket
   Guardians, is member of, Guardians, backstory, flashbacks
   Guardians, is member of, Guardians, is former second-in-command of, Ravagers
   Quill, is half-sister of, Mantis, is member of, Guardians
   Quill, is half-sister of, Mantis, is, Mantis
   Quill, is in a state of depression, following the appearance of a variant of his dead lover Gamora
   Quill, is half-sister of, Mantis
   Peter Quill, is leader of, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy
   Peter Quill, was raised by, a group of alien thieves and smugglers
   Peter Quill, would return to the MCU, May 2021
   Peter Quill, is leader of, Guardians of the Galaxy
   Peter Quill, is half-human, half-Celestial
   Peter Quill, was abducted from Earth, as a child
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released in, Dolby Cinema
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, released on, Disney+
   Guardians of the Galaxy, is sequel to, Guardians of the Galaxy, is sequel to, Guardians of the Galaxy Vol. 2

Peter Quill is the leader of the Guardians of the Galaxy and was
abducted from Earth as a child. He is half-human and half-Celestial,
and was raised by a group of alien thieves and smugglers. He would
return to the MCU in May 2021.
And let's check the response's metadata to know more details of the
retrival of Graph RAG with nl2graphquery by inspecting
"response.metadata".
* **text2Cypher**, it generates a Cypher Query towards the answer as
  the context.
   Graph Store Query: MATCH (e:`entity`)-[r:`relationship`]->(e2:`entity`)
   WHERE e.`entity`.`name` == 'Peter Quill'
   RETURN e2.`entity`.`name`
* **SubGraph RAG**, it get the SubGraph of 'Peter Quill' to build the
  context.
* Finally, it combined the two nodes of context, to synthesize the
  answer.
   import pprint
   pp = pprint.PrettyPrinter()

Knowledge Graph RAG Query Engine

   pp.pprint(response.metadata)
   {'46faf6d6-8a71-44c8-ae81-794e71a62fbc': {'graph_schema': 'Node properties: '
                                                             "[{'tag': 'entity', "
                                                             "'properties': "
                                                             "[('name', "
                                                             "'string')]}]\n"
                                                             'Edge properties: '
                                                             "[{'edge': "
                                                             "'relationship', "
                                                             "'properties': "
                                                             "[('relationship', "
                                                             "'string')]}]\n"
                                                             'Relationships: '
                                                             "['(:entity)-[:relationship]->(:entity)']\n",
                                             'graph_store_query': '```\n'
                                                                  'MATCH '
                                                                  '(p:`entity`)-[:`relationship`]->(m:`entity`) '
                                                                  'WHERE '
                                                                  'p.`entity`.`name` '
                                                                  "== 'Peter "
                                                                  "Quill'\n"
                                                                  'RETURN '
                                                                  'm.`entity`.`name`;\n'
                                                                  '```',
                                             'graph_store_response': {'m.entity.name': ['May '
                                                                                '2021',
                                                                                'as '
                                                                                'a '
                                                                                'child',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy',
                                                                                'a '
                                                                                'group '
                                                                                'of '
                                                                                'alien '
                                                                                'thieves '
                                                                                'and '
                                                                                'smugglers',
                                                                                'half-Celestial']},
                                             'query_str': 'What do you know about '
                                                          'Peter Quill?'},
    'def19bbf-d8ac-43b2-a121-675748cc9454': {'kg_rel_map': {'Guardians': ['Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'was '
                                                                          'experimented '
                                                                          'on, by '
                                                                          'the '
                                                                          'High '
                                                                          'Evolutionary',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'considered '
                                                                          'to '
                                                                          'tell, '
                                                                          'origins',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'origins, '
                                                                          'team-up '
                                                                          'movie',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'befriended, '
                                                                          'his '
                                                                          'fellow '
                                                                          'Batch '
                                                                          '89 '
                                                                          'test '
                                                                          'subjects',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'sought '
                                                                          'to '
                                                                          'enhance '
                                                                          'and '
                                                                          'anthropomorphize '
                                                                          'animal '
                                                                          'lifeforms, '
                                                                          'to '
                                                                          'create '
                                                                          'an '
                                                                          'ideal '
                                                                          'society',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is '
                                                                          'creator '
                                                                          'of, '
                                                                          'Rocket',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is, '
                                                                          'Mantis',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is '
                                                                          'half-sister '
                                                                          'of, '
                                                                          'Mantis',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is, '
                                                                          'Kraglin',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '

Knowledge Graph RAG Query Engine

                                                                          'developed '
                                                                          'psionic '
                                                                          'abilities, '
                                                                          'after '
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                                                                          'in '
                                                                          'outer '
                                                                          'space',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'would '
                                                                          'portray, '
                                                                          'Cosmo',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'recalls, '
                                                                          'his '
                                                                          'past',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'focus '
                                                                          'on, '
                                                                          'third '
                                                                          'Guardians-centric '
                                                                          'film',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is, '
                                                                          'Rocket',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'backstory, '
                                                                          'flashbacks',
                                                                          'Guardians, '
                                                                          'is '
                                                                          'member '
                                                                          'of, '
                                                                          'Guardians, '
                                                                          'is '
                                                                          'former '
                                                                          'second-in-command '
                                                                          'of, '
                                                                          'Ravagers'],
                                                            'Guardians of the Galaxy': ['Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
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                                                                                'of '
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                                                                                'Galaxy, '
                                                                                'released '
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                                                                                'Cinema',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'Guardians '
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                                                                                'Disney+',
                                                                                'Guardians '
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                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
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                                                                                'the '
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                                                                                'Vol. '
                                                                                '2',
                                                                                'Guardians '
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                                                                                'the '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                '3D',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'released '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'grossed, '
                                                                                '$32 '
                                                                                'million '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'leader '
                                                                                'of, '
                                                                                'Guardians '

Knowledge Graph RAG Query Engine

                                                                                'of '
                                                                                'the '
                                                                                'Galaxy',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'Vol. '
                                                                                '3',
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                                                                                'the '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'wrote '
                                                                                'and '
                                                                                'directed, '
                                                                                'Guardians '
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                                                                                'the '
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                                                                                'Vol. '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is, '
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                                                                                'superhero '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                '$845.4 '
                                                                                'million',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'the '
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                                                                                'Vol. '
                                                                                '3',
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                                                                                'the '
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                                                                                'of, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
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                                                                                'a '
                                                                                'child',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'grossed, '
                                                                                '$359 '
                                                                                'million '
                                                                                'in '
                                                                                'the '
                                                                                'United '
                                                                                'States '
                                                                                'and '
                                                                                'Canada',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'IMAX',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '

Knowledge Graph RAG Query Engine

                                                                                'is '
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                                                                                'of '
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                                                                                'thieves '
                                                                                'and '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'screened '
                                                                                'at, '
                                                                                'Dongdaemun '
                                                                                'Design '
                                                                                'Plaza',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'released '
                                                                                'in, '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'leader '
                                                                                'of, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'would '
                                                                                'return '
                                                                                'to '
                                                                                'the '
                                                                                'MCU, '
                                                                                'May '
                                                                                '2021',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'grossed, '
                                                                                '$486.4 '
                                                                                'million '
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                                                                                'other '
                                                                                'territories',
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                                                                                'of '
                                                                                'the '
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                                                                                'is '
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                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
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                                                                                'released '
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                                                                                'Ultra '
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                                                                                'Blu-ray',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'released '
                                                                                'on, '
                                                                                'DVD',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'grossed, '
                                                                                '$92 '
                                                                                'million '
                                                                                'for '
                                                                                'a '
                                                                                'drop '
                                                                                'of '
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                                                                                'from '
                                                                                'its '
                                                                                'opening '
                                                                                'weekend',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'premiered '
                                                                                'at, '
                                                                                'Disneyland '
                                                                                'Paris',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '

Knowledge Graph RAG Query Engine

                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'released '
                                                                                'on, '
                                                                                'Blu-ray',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'could '
                                                                                'happen, '
                                                                                'April '
                                                                                '2017',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'made, '
                                                                                '$48.2 '
                                                                                'million '
                                                                                'on '
                                                                                'its '
                                                                                'first '
                                                                                'day',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'grossed, '
                                                                                '$168.1 '
                                                                                'million '
                                                                                'in '
                                                                                'its '
                                                                                'opening '
                                                                                'weekend',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'debuted '
                                                                                'with, '
                                                                                '$118.4 '
                                                                                'million',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'would '
                                                                                'likely '
                                                                                'center '
                                                                                'on, '
                                                                                'new '
                                                                                'group '
                                                                                'of '
                                                                                'characters',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'retained '
                                                                                'the '
                                                                                'top '
                                                                                'spot '
                                                                                'at '
                                                                                'the '
                                                                                'box '
                                                                                'office '
                                                                                'with, '
                                                                                '$62 '
                                                                                'million',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'be '
                                                                                'his '
                                                                                'last '
                                                                                'Guardians '
                                                                                'film, '
                                                                                'September '
                                                                                '2019',
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'is '
                                                                                'sequel '
                                                                                'to, '
                                                                                'Guardians '
                                                                                'of '
                                                                                'the '
                                                                                'Galaxy, '
                                                                                'nominated '
                                                                                'for, '
                                                                                'Best '
                                                                                'Picture'],
                                                            'Marvel': ['Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'stated, '
                                                                       'that in '
                                                                       'addition '
                                                                       'to having '
                                                                       'the  '
                                                                       'basic '
                                                                       'story  '
                                                                       'for '
                                                                       'Guardians '
                                                                       'of the '
                                                                       'Galaxy '
                                                                       'Vol.2 '
                                                                       '(2017) '
                                                                       'while '
                                                                       'working '
                                                                       'on the '
                                                                       'first '
                                                                       'film',
                                                                       'Marvel, '
                                                                       'was fired '

Knowledge Graph RAG Query Engine

                                                                       'from, '
                                                                       'Marvel, '
                                                                       'was '
                                                                       'unsure, '
                                                                       'if he '
                                                                       'would be '
                                                                       'involved '
                                                                       'with a '
                                                                       'third '
                                                                       'Guardians '
                                                                       'film',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'was '
                                                                       'privately '
                                                                       'notified '
                                                                       'by, Horn',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Guardians '
                                                                       'of the '
                                                                       'Galaxy '
                                                                       'Vol. 3',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'wrote and '
                                                                       'directed, '
                                                                       'Guardians '
                                                                       'of the '
                                                                       'Galaxy '
                                                                       'Vol. 3',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Disney',
                                                                       'Marvel, '
                                                                       'was fired '
                                                                       'from, '
                                                                       'Marvel, '
                                                                       'could '
                                                                       'return as '
                                                                       'director '
                                                                       'for, '
                                                                       'Vol.3'],
                                                            'Peter Quill': ['Peter '
                                                                            'Quill, '
                                                                            'is '
                                                                            'leader '
                                                                            'of, '
                                                                            'Guardians '
                                                                            'of '
                                                                            'the '
                                                                            'Galaxy, '
                                                                            'is '
                                                                            'sequel '
                                                                            'to, '
                                                                            'Guardians '
                                                                            'of '
                                                                            'the '
                                                                            'Galaxy',
                                                                            'Peter '
                                                                            'Quill, '
                                                                            'was '
                                                                            'raised '
                                                                            'by, '
                                                                            'a '
                                                                            'group '
                                                                            'of '
                                                                            'alien '
                                                                            'thieves '
                                                                            'and '
                                                                            'smugglers',
                                                                            'Peter '
                                                                            'Quill, '
                                                                            'would '
                                                                            'return '
                                                                            'to '
                                                                            'the '
                                                                            'MCU, '
                                                                            'May '
                                                                            '2021',
                                                                            'Peter '
                                                                            'Quill, '
                                                                            'is '
                                                                            'leader '
                                                                            'of, '
                                                                            'Guardians '
                                                                            'of '
                                                                            'the '
                                                                            'Galaxy',
                                                                            'Peter '
                                                                            'Quill, '
                                                                            'is '
                                                                            'half-human, '
                                                                            'half-Celestial',
                                                                            'Peter '
                                                                            'Quill, '
                                                                            'was '
                                                                            'abducted '
                                                                            'from '
                                                                            'Earth, '
                                                                            'as a '
                                                                            'child'],
                                                            'Quill': ['Quill, is '
                                                                      'half-sister '
                                                                      'of, '
                                                                      'Mantis, is '
                                                                      'member of, '
                                                                      'Guardians',
                                                                      'Quill, is '
                                                                      'half-sister '
                                                                      'of, '
                                                                      'Mantis, '
                                                                      'is, Mantis',
                                                                      'Quill, is '
                                                                      'in a state '
                                                                      'of '
                                                                      'depression, '
                                                                      'following '
                                                                      'the '
                                                                      'appearance '
                                                                      'of a '
                                                                      'variant of '
                                                                      'his dead '
                                                                      'lover '
                                                                      'Gamora',
                                                                      'Quill, is '
                                                                      'half-sister '
                                                                      'of, '
                                                                      'Mantis']},
                                             'kg_rel_text': ['Guardians, is '
                                                             'member of, '
                                                             'Guardians, was '
                                                             'experimented on, by '
                                                             'the High '
                                                             'Evolutionary',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, '
                                                             'considered to tell, '
                                                             'origins',

Knowledge Graph RAG Query Engine

                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, origins, '
                                                             'team-up movie',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, '
                                                             'befriended, his '
                                                             'fellow Batch 89 '
                                                             'test subjects',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, sought '
                                                             'to enhance and '
                                                             'anthropomorphize '
                                                             'animal lifeforms, '
                                                             'to create an ideal '
                                                             'society',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is '
                                                             'creator of, Rocket',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is, '
                                                             'Mantis',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is '
                                                             'half-sister of, '
                                                             'Mantis',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is, '
                                                             'Kraglin',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, '
                                                             'developed psionic '
                                                             'abilities, after '
                                                             'being abandoned in '
                                                             'outer space',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, would '
                                                             'portray, Cosmo',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, recalls, '
                                                             'his past',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, focus '
                                                             'on, third '
                                                             'Guardians-centric '
                                                             'film',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is, '
                                                             'Rocket',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, '
                                                             'backstory, '
                                                             'flashbacks',
                                                             'Guardians, is '
                                                             'member of, '
                                                             'Guardians, is '
                                                             'former '
                                                             'second-in-command '
                                                             'of, Ravagers',
                                                             'Quill, is '
                                                             'half-sister of, '
                                                             'Mantis, is member '
                                                             'of, Guardians',
                                                             'Quill, is '
                                                             'half-sister of, '
                                                             'Mantis, is, Mantis',
                                                             'Quill, is in a '
                                                             'state of '
                                                             'depression, '
                                                             'following the '
                                                             'appearance of a '
                                                             'variant of his dead '
                                                             'lover Gamora',
                                                             'Quill, is '
                                                             'half-sister of, '
                                                             'Mantis',
                                                             'Peter Quill, is '
                                                             'leader of, '
                                                             'Guardians of the '
                                                             'Galaxy, is sequel '
                                                             'to, Guardians of '
                                                             'the Galaxy',
                                                             'Peter Quill, was '
                                                             'raised by, a group '
                                                             'of alien thieves '
                                                             'and smugglers',
                                                             'Peter Quill, would '
                                                             'return to the MCU, '
                                                             'May 2021',
                                                             'Peter Quill, is '
                                                             'leader of, '
                                                             'Guardians of the '
                                                             'Galaxy',
                                                             'Peter Quill, is '
                                                             'half-human, '
                                                             'half-Celestial',
                                                             'Peter Quill, was '
                                                             'abducted from '
                                                             'Earth, as a child',
                                                             'Guardians of the '
                                                             'Galaxy, is sequel '
                                                             'to, Guardians of '
                                                             'the Galaxy, '
                                                             'released in, Dolby '
                                                             'Cinema',
                                                             'Guardians of the '

Knowledge Graph RAG Query Engine

                                                             'Galaxy, is sequel '
                                                             'to, Guardians of '
                                                             'the Galaxy, '
                                                             'released on, '
                                                             'Disney+',
                                                             'Guardians of the '
                                                             'Galaxy, is sequel '
                                                             'to, Guardians of '
                                                             'the Galaxy, is '
                                                             'sequel to, '
                                                             'Guardians of the '
                                                             'Galaxy Vol. 2']}}