user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: What is the holy book of the religion whose sacred sites include Grotto-heavens? 
Knowledge Triplets: Contained by, type.property.expected_type, Location
Time zone(s), rdf-schema#domain, Location
Geometry, type.property.schema, Location
Contained by, rdf-schema#domain, Location
Contains, type.property.expected_type, Location
Nearby airports, type.property.schema, Location
Contains, rdf-schema#range, Location
Location, type.type.properties, Water area
Partially contains, type.property.reverse_property, Partially contained by
Area, type.property.schema, Location
Meta, freebase.type_kind.types, Location
Primarily contained by, type.property.expected_type, Location
Contained by, type.property.master_property, Contains
Area, rdf-schema#domain, Location
Location, freebase.type_profile.strict_included_types, Inanimate
Location, freebase.type_profile.kind, Meta
USBG name, rdf-schema#domain, Location
Location, type.type.properties, UN/LOCODE
shape, type.property.schema, Location
Location, type.type.properties, GNIS ID
Adjoins, type.property.schema, Location
Location, type.type.properties, USBG name
Partially contained by, type.property.expected_type, Location
Contains, rdf-schema#domain, Location
Location, type.type.properties, Contained by
Location, type.type.properties, Geometry
Water area, rdf-schema#domain, Location
Water area, type.property.schema, Location
Grotto-heavens, common.topic.article, m.027n2wx
Contains major portion of, type.property.reverse_property, Primarily contained by
Partially contained by, type.property.schema, Location
Contains, type.property.schema, Location
Location, type.type.properties, Primarily contained by
Primarily contained by, rdf-schema#domain, Location
Location, type.type.properties, Events
Location, type.type.properties, Area
Location, freebase.type_profile.tasks, fix /location/adjoining property
Nearby airports, rdf-schema#domain, Location
Partially contains, rdf-schema#range, Location
People born here, type.property.schema, Location
Location, type.type.properties, Time zone(s)
Location, type.type.properties, Street address
inside, rdf-schema#domain, Location
Primarily contained by, type.property.master_property, Contains major portion of
UN/LOCODE, type.property.schema, Location
Partially contains, rdf-schema#domain, Location
point, rdf-schema#domain, Location
Mean elevation, rdf-schema#domain, Location
Grotto-heavens, common.topic.notable_for, g.12557t7r9
Partially contains, type.property.schema, Location
Location, type.type.properties, Partially contained by
Primarily contained by, type.property.schema, Location
Location, type.type.properties, point
Primarily contained by, rdf-schema#range, Location
Location, type.type.properties, shape
Land area, type.property.schema, Location
Location, freebase.type_hints.included_types, Topic
Grotto-heavens, common.topic.notable_types, Location
Partially contains, type.property.expected_type, Location
GNIS ID, type.property.schema, Location
UN/LOCODE, rdf-schema#domain, Location
Coterminous with, type.property.schema, Location
Location, type.type.domain, Location
Contained by, rdf-schema#range, Location
point, type.property.schema, Location
Adjectival form, type.property.schema, Location
Topic, freebase.type_profile.published, Published
Contains, type.property.reverse_property, Contained by
Location, type.type.properties, Contains
Location, type.type.properties, Geolocation
Geometry, rdf-schema#domain, Location
Adjectival form, rdf-schema#domain, Location
Location, type.type.properties, Partially contains
Location, type.type.properties, Adjectival form
Contained by, type.property.schema, Location
Partially contained by, rdf-schema#domain, Location
Location, freebase.documented_object.documentation, m.0kpqf7
Meta, freebase.type_kind.types, Topic
Street address, type.property.schema, Location
GNIS ID, rdf-schema#domain, Location
Location, type.type.properties, Nearby airports
Contains, owl#inverseOf, Contained by
Location, type.type.properties, Adjoins
Location, type.type.properties, inside
inside, type.property.schema, Location
Location, common.topic.article, m.0kpqf7
Time zone(s), type.property.schema, Location
Coterminous with, rdf-schema#domain, Location
Contains major portion of, type.property.expected_type, Location
Contains major portion of, rdf-schema#range, Location
Location, freebase.type_profile.equivalent_topic, Location
Contains major portion of, type.property.schema, Location
Location, type.type.properties, Contains major portion of
Land area, rdf-schema#domain, Location
GEOnet feature ID, type.property.schema, Location
GEOnet feature ID, rdf-schema#domain, Location
Location, type.type.properties, Coterminous with
Events, type.property.schema, Location
Location, type.type.properties, near
People born here, rdf-schema#domain, Location
Partially contained by, rdf-schema#range, Location
Adjoins, rdf-schema#domain, Location
Location, type.type.properties, People born here
Location, freebase.domain_profile.equivalent_topic, Location
Location, freebase.equivalent_topic.equivalent_domain, Location
Partially contained by, type.property.master_property, Partially contains
near, rdf-schema#domain, Location
Location, type.type.properties, Land area
Geolocation, type.property.schema, Location
Location, type.type.properties, GEOnet feature ID
shape, rdf-schema#domain, Location
near, type.property.schema, Location
Partially contains, owl#inverseOf, Partially contained by
Geolocation, rdf-schema#domain, Location
Contains major portion of, owl#inverseOf, Primarily contained by
Location, type.type.properties, Mean elevation
Location, freebase.equivalent_topic.equivalent_type, Location
Topic, freebase.type_profile.kind, Meta
USBG name, type.property.schema, Location
Mean elevation, type.property.schema, Location
Street address, rdf-schema#domain, Location
Location, freebase.type_profile.published, Published
Events, rdf-schema#domain, Location
Contains major portion of, rdf-schema#domain, Location

Answer: Zhuang Zhou
Tao Te Ching
I Ching
Daozang