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: where was hackney 2012 held? 
Knowledge Triplets: Radio 1's Big Weekend, common.topic.notable_types, Music Festival
End date, rdf-schema#domain, Event
Event, type.type.expected_by, Related events
Instance of recurring event, rdf-schema#domain, Event
Event, type.type.properties, Location(s)
Event, type.type.expected_by, Event year
Event, type.type.expected_by, Notable events
Location(s), rdf-schema#range, Location
Jay-Z at Radio 1′s Hackney Weekend 2012, common.topic.notable_for, g.1yg57g272
Location, freebase.type_hints.included_types, Topic
Event, type.type.expected_by, Played at
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0yszp5z
Instance of recurring event, type.property.reverse_property, Instances
Event, type.type.properties, Comment
Radio 1's Big Weekend, freebase.valuenotation.has_no_value, Date of final occurrence
Hackney Marshes, common.topic.notable_for, g.1257fkbkb
Event, type.type.expected_by, Events used for
Event, type.type.expected_by, Participated in revolution
Radio 1's Big Weekend, common.topic.notable_for, g.1257kq2vb
m.0yvjdcf, award.award_nomination.nominated_for, Radio 1's Big Weekend
Event, type.type.expected_by, District Events
Event, type.type.domain, Event
Radio 1's Big Weekend, common.topic.webpage, m.03lm2t4
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0ysvyfb
Start date, type.property.schema, Event
m.0yszp5z, award.award_nomination.nominated_for, Radio 1's Big Weekend
Event, type.type.expected_by, Edition
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0yvjdcf
Hackney Marshes, common.topic.image, 1920 White House Inn London Borough of Hackney
Location(s), rdf-schema#domain, Event
Event, type.type.expected_by, Related Event
Event, common.topic.article, m.02zd1jj
Radio 1's Big Weekend, time.recurring_event.current_frequency, Yearly
Jay-Z at Radio 1′s Hackney Weekend 2012, freebase.valuenotation.has_no_value, Instance of recurring event
Included in event, rdf-schema#range, Event
Radio 1′s Hackney Weekend 2012, common.topic.notable_for, g.1yg57sf3y
Event, type.type.expected_by, Ship Journey event
Event, type.type.expected_by, Includes event
Event, type.type.properties, Included in event
Start date, rdf-schema#domain, Event
Radio 1's Big Weekend, time.recurring_event.instances, Radio 1′s Hackney Weekend 2012
Event, type.type.expected_by, Event
Hackney Marshes, location.location.events, Radio 1′s Hackney Weekend 2012
Event, type.type.expected_by, Included in event
Event, type.type.expected_by, Oscar show hosted
Event, type.type.expected_by, Horse race instances
Event, type.type.expected_by, Event that triggered displacement
Event, freebase.type_profile.strict_included_types, Non-Agent
Included in event, rdf-schema#domain, Event
Event, type.type.expected_by, Associated event
Comment, rdf-schema#domain, Event
Radio 1′s Hackney Weekend 2012, time.event.locations, Hackney Marshes
Event, type.type.properties, People involved
Event, freebase.type_profile.equivalent_topic, Event
Event, freebase.type_profile.published, Published
Location(s), type.property.expected_type, Location
Hackney Marshes, common.topic.article, m.031dyb
Event, freebase.type_hints.included_types, Topic
Included in event, type.property.schema, Event
Radio 1′s Hackney Weekend 2012, time.event.includes_event, Jay-Z at Radio 1′s Hackney Weekend 2012
Jay-Z at Radio 1′s Hackney Weekend 2012, award.award_nominated_work.award_nominations, m.0ywxw14
End date, type.property.schema, Event
Location(s), owl#inverseOf, Events
Event, type.type.expected_by, Prominent Figure of
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0ystn14
Event, type.type.expected_by, event
Comment, type.property.schema, Event
Hackney Marshes, location.location.events, Jay-Z at Radio 1′s Hackney Weekend 2012
Event, type.type.properties, End date
Location, freebase.type_profile.published, Published
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0yszxx9
Radio 1′s Hackney Weekend 2012, common.topic.notable_types, Event
Radio 1's Big Weekend, award.award_nominated_work.award_nominations, m.0yst_g6
Event, type.type.properties, Includes event
Event, type.type.properties, Start date
Jay-Z at Radio 1′s Hackney Weekend 2012, time.event.people_involved, Jay-Z
Included in event, type.property.expected_type, Event
Event, type.type.expected_by, Conflict source for displacement
Jay-Z at Radio 1′s Hackney Weekend 2012, time.event.included_in_event, Radio 1′s Hackney Weekend 2012
Event, type.type.expected_by, Rise to prominence
Event, type.type.expected_by, Exhibited at event
Hackney Marshes, location.location.containedby, United Kingdom
Jay-Z at Radio 1′s Hackney Weekend 2012, common.topic.notable_types, Event
Radio 1′s Hackney Weekend 2012, time.event.instance_of_recurring_event, Radio 1's Big Weekend
Instance of recurring event, owl#inverseOf, Instances
Included in event, type.property.reverse_property, Includes event
m.0ysvyfb, award.award_nomination.nominated_for, Radio 1's Big Weekend
Hackney Marshes, common.topic.notable_types, Location
Radio 1′s Hackney Weekend 2012, location.location.events, Hackney Marshes
m.0ywxw14, award.award_nomination.award_nominee, Jay-Z
m.0ystn14, award.award_nomination.nominated_for, Radio 1's Big Weekend
Event, type.type.expected_by, Academy Awards show
m.0ywxw14, award.award_nomination.nominated_for, Jay-Z at Radio 1′s Hackney Weekend 2012
Event, freebase.type_profile.strict_included_types, Inanimate
Location, freebase.type_profile.strict_included_types, Inanimate
Included in event, owl#inverseOf, Includes event
Hackney Marshes, location.location.geolocation, m.0cly9yj
Event, type.type.expected_by, Instances
Radio 1's Big Weekend, common.topic.article, m.0dddzt
Event, type.type.expected_by, Year
m.03lm2t4, common.webpage.topic, Radio 1's Big Weekend
Jay-Z at Radio 1′s Hackney Weekend 2012, time.event.locations, Hackney Marshes
m.0yst_g6, award.award_nomination.nominated_for, Radio 1's Big Weekend
Instance of recurring event, type.property.schema, Event
Location(s), type.property.schema, Event
Hackney Marshes, common.topic.image, Hackney Marshes holds the world record for the highest number (88) of full-sized football pitches in one place
Event, type.type.expected_by, Events
Location(s), type.property.reverse_property, Events
m.0yszxx9, award.award_nomination.nominated_for, Radio 1's Big Weekend
Event, type.type.properties, Instance of recurring event
Location, type.type.properties, Events
Event, freebase.type_profile.strict_included_types, Topic
Event, freebase.type_profile.kind, Definition

Answer: Hackney Marshes