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 subject does the radio the standard school broadcast cover? 
Knowledge Triplets: The Standard School Broadcast, radio.radio_program.subjects, Music appreciation
The Standard School Broadcast, radio.radio_program.first_broadcast, 1928
m.05v0v7d, award.award_honor.year, 1975
The Standard School Broadcast, radio.radio_subject.programs_with_this_subject, Music appreciation
m.064j847, award.award_honor.award_winner, Chevron Corporation
m.05swwn7, award.award_honor.award, Peabody Award
m.064j847, award.award_honor.year, 1975
m.064j847, award.award_honor.notes_description, For Forty-Seven Years of Continuous Educational Radio Service to Citizens of the Far West.
m.05v0v7d, award.award_honor.award, Peabody Award
m.05swwn7, award.award_honor.year, 1958
Peabody Award, award.award_category.winners, m.05swwn7
m.064j847, award.award_honor.honored_for, The Standard School Broadcast
ZSI on The Standard School Broadcast, user.zsi_editorial.editorial.comment.target, The Standard School Broadcast
The Standard School Broadcast, award.award_winning_work.awards_won, m.05v0v7d
The Standard School Broadcast, user.zsi_editorial.editorial.topic.comments, ZSI on The Standard School Broadcast
needs_approval, user.zsi_editorial.editorial.tag.comments, ZSI on The Standard School Broadcast
The Standard School Broadcast, award.award_winning_work.awards_won, m.05swwn7
ZSI on The Standard School Broadcast, type.object.permission, m.03mk2pl
m.05v0v7d, award.award_honor.notes_description, Institutional Award: Standard School Broadcast for 47 Years of Continuous Educational Radio Service to Citizens to the Far West
m.05v0v7d, award.award_honor.honored_for, The Standard School Broadcast
Chevron Corporation, award.award_winner.awards_won, m.05swwn7
m.05v0v7d, award.award_honor.ceremony, 1976 Peabody Awards Ceremony
m.05swwn7, award.award_honor.ceremony, 1959 Peabody Awards Ceremony
ZSI on The Standard School Broadcast, user.zsi_editorial.editorial.comment.editor, ZSI
ZSI on The Standard School Broadcast, user.zsi_editorial.editorial.comment.editorial_tags, needs_approval
ZSI, user.zsi_editorial.editorial.editor.comments, ZSI on The Standard School Broadcast
1976 Peabody Awards Ceremony, award.award_ceremony.awards_presented, m.05v0v7d
m.05swwn7, award.award_honor.award_winner, Chevron Corporation
Chevron Corporation, award.award_winner.awards_won, m.05v0v7d
Chevron Corporation, award.award_winner.awards_won, m.064j847
m.05v0v7d, award.award_honor.award_winner, Chevron Corporation
Peabody Award, award.award_category.winners, m.05v0v7d
ZSI on The Standard School Broadcast, user.zsi_editorial.editorial.comment.editorial_tags, initial_review
m.05swwn7, award.award_honor.honored_for, The Standard School Broadcast
1959 Peabody Awards Ceremony, award.award_ceremony.awards_presented, m.05swwn7
The Standard School Broadcast, award.award_winning_work.awards_won, m.064j847
Music appreciation, radio.radio_subject.programs_with_this_subject, The Standard School Broadcast
m.03mk2pl, type.permission.controls, ZSI on The Standard School Broadcast
The Standard School Broadcast, broadcast.content.production_start, 1928
initial_review, user.zsi_editorial.editorial.tag.comments, ZSI on The Standard School Broadcast

Answer: Music appreciation