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 name of the flag of the state with the official symbol of Yule Marble? 
Knowledge Triplets: m.0jbdlj8, location.location_symbol_relationship.symbol, Yule Marble
m.0jbdlj8, location.location_symbol_relationship.Kind_of_symbol, State rock
Lincoln Memorial, base.usnationalparks.us_national_park.classification, National Memorial
Official symbol, freebase.type_hints.included_types, Topic
Lincoln memorial dc 20041011 095847 1, common.image.appears_in_topic_gallery, Yule Marble
m.0jspjkw, symbols.flag_use.from_date, 1911-12-04
Yule Marble, location.symbol_of_administrative_division.official_symbol_of, m.0jbdlj8
State rock, location.offical_symbol_variety.symbols_of_this_kind, m.0jbdlj8
Lincoln Memorial, common.topic.image, Lincoln memorial dc 20041011 095847 1
Lincoln memorial dc 20041011 095847 1, common.image.appears_in_topic_gallery, Lincoln Memorial
Yule Marble, common.topic.notable_for, g.1259sbcg5
National Memorial, common.topic.image, Lincoln memorial dc 20041011 095847 1
Yule Marble, common.topic.article, m.067bnj
National Memorial, base.usnationalparks.nps_classification.classification, Lincoln Memorial
Lincoln memorial dc 20041011 095847 1, common.image.appears_in_topic_gallery, National Memorial
Lincoln-Memorial WashingtonDC Crop, common.image.appears_in_topic_gallery, Sylacauga marble
Lincoln-Memorial WashingtonDC Crop, common.image.size, m.09hw_2k
m.0jspjkw, symbols.flag.used_by, Flag of Colorado
Official symbol, type.type.domain, Location
Flag of Colorado, symbols.flag.used_by, m.0jspjkw
Colorado, symbols.flag_use.flag_user, m.0jspjkw
Yule Marble, location.location_symbol_relationship.symbol, m.0jbdlj8
Official symbol, common.topic.article, m.046280v
Colorado, symbols.flag_referent.flag, m.0jspjkw
Yule Marble, common.topic.notable_types, Official symbol
m.0jspjkw, symbols.flag_use.flag_user, Colorado
Lincoln memorial dc 20041011 095847 1, common.image.size, m.0291tn6
m.0jbdlj8, location.location_symbol_relationship.administrative_division, Colorado
m.0jbdlj8, location.location_symbol_relationship.administrative_division, Colorado
Official symbol, type.type.properties, Official symbol of
Colorado, government.governmental_jurisdiction.official_symbols, m.0jbdlj8
Yule Marble, common.topic.image, Lincoln memorial dc 20041011 095847 1
Yule Marble, common.topic.image, Lincoln-Memorial WashingtonDC Crop
Official symbol, freebase.type_profile.strict_included_types, Topic
Official symbol, type.type.expected_by, Symbol
Lincoln-Memorial WashingtonDC Crop, common.image.appears_in_topic_gallery, Yule Marble
Yule Marble, location.location.geolocation, m.01226xmn
Official symbol, freebase.type_profile.kind, Role
m.0jspjkw, symbols.flag_use.flag, Flag of Colorado

Answer: Flag of Colorado