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 brand of guitar as used by the producer of Gone Troppo? 
Knowledge Triplets: Consumer product, freebase.type_profile.strict_included_types, Topic
Consumer product, type.type.properties, Made by company
Meta, freebase.type_kind.types, Consumer product
Consumer product, freebase.type_profile.kind, Meta
Consumer product, freebase.type_profile.equivalent_topic, Consumer product
Consumer product, type.type.properties, External reviews
Consumer product, freebase.type_hints.included_types, Topic
Consumer product, freebase.type_profile.strict_included_types, Inanimate
Gone Troppo, common.topic.notable_for, g.1255frz79
Products, rdf-schema#range, Consumer product
Consumer product, type.type.properties, Brand
Consumer product, common.topic.article, m.05h9s36
Consumer product, freebase.type_profile.strict_included_types, Non-Agent
Consumer product, type.type.expected_by, Products
Brand, type.property.reverse_property, Products
Consumer product, type.type.properties, Amazon.com ASIN
Brand, type.property.schema, Consumer product
Consumer product, type.type.expected_by, Products Included
Consumer product, type.type.properties, Official webpage
Meta, freebase.type_kind.types, Topic
Consumer product, type.type.properties, GTIN
Consumer product, type.type.expected_by, owns a product
Consumer product, type.type.domain, Business
Gone Troppo, common.topic.notable_types, Consumer product
Topic, freebase.type_profile.published, Published
Consumer product, type.type.properties, Category
Consumer product, type.type.properties, MSRP
Consumer product, type.type.expected_by, Product
Consumer product, type.type.properties, Themes
Consumer product, freebase.type_profile.strict_included_types, Physically Instantiable
Brand, rdf-schema#domain, Consumer product
Consumer product, type.type.properties, Purchase links
Consumer product, type.type.expected_by, Products using
Consumer product, type.type.properties, Product line
Consumer product, type.type.expected_by, Other Compatible Products
Consumer product, type.type.properties, Product number
Consumer product, type.type.expected_by, Consumer product
Consumer product, freebase.type_profile.published, Published
Products, type.property.master_property, Brand
Business, type.domain.types, Consumer product
Products, type.property.expected_type, Consumer product
Consumer product, type.type.expected_by, HVAC Parts
Brand, owl#inverseOf, Products
Topic, freebase.type_profile.kind, Meta
Consumer product, freebase.equivalent_topic.equivalent_type, Consumer product

Answer: Fender Stratocaster
Rickenbacker 360/12