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: Name the home country of the person who spoke about education reform.? 
Knowledge Triplets: Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family
Literature Subject, freebase.documented_object.documentation, m.021y652
American History, education.field_of_study.subdiscipline_of, History
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Ages 11-12
Subjects, type.property.reverse_property, Works Written About This Topic
History, education.field_of_study.subdisciplines, American History
Tom Brown's School Days, common.topic.article, m.0466fzw
Tom Brown's School Days, film.film.genre, Coming of age
Tom Brown's School Days, film.film.written_by, Gene Towne
Film, freebase.type_hints.included_types, Topic
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education in the United States
Rugby School, fictional_universe.fictional_setting.works_set_here, Tom Brown's School Days
Left Back: A Century of Failed School Reforms, book.written_work.subjects, United States of America
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas Based on Classic Literature
Literature Subject, type.type.expected_by, Subject(s)
m.0j31vdq, event.speech_or_presentation.speech_topic, Energy development
Tom Brown's School Days, book.book.genre, School story
Left Back: A Century of Failed School Reforms, book.book.genre, Non-fiction
Education reform, book.written_work.subjects, Left Back: A Century of Failed School Reforms
m.0j31vdq, event.speech_or_presentation.speech_topic, Education reform
Books, type.domain.types, Literature Subject
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education reform
Literature Subject, type.type.properties, Works Written About This Topic
Diane Ravitch, book.author.works_written, Left Back: A Century of Failed School Reforms
Gene Towne, film.producer.film, Tom Brown's School Days
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, National Education Association
m.04dj0zq, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, common.topic.webpage, m.0cjg0mq
Literature Subject, type.type.domain, Books
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.author, Myron Lieberman
m.05v7chd, film.performance.film, Tom Brown's School Days
m.04dj0zk, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Historical period drama
Film, freebase.type_profile.strict_included_types, Topic
Tom Brown's School Days, film.film.language, English Language
American Federation of Teachers, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Subjects, owl#inverseOf, Works Written About This Topic
Energy development, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
m.0j31vdq, event.speech_or_presentation.event, 2012 State of the Union Address
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Movies for ages 11 to 12
Literature Subject, freebase.type_profile.strict_included_types, Topic
m.0bwjn90, award.ranking.item, Tom Brown's School Days
Robert Stevenson, film.director.film, Tom Brown's School Days
Works Written About This Topic, rdf-schema#domain, Literature Subject
Literature Subject, type.type.properties, Musical compositions about this topic
Tom Brown's School Days, film.film.genre, Drama
Tom Brown's School Days, media_common.adaptation.adapted_from, Tom Brown's School Days
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, Education reform
m.05v7cfl, film.performance.film, Tom Brown's School Days
National Education Association, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Tom Brown's School Days, common.topic.notable_types, Book
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Movies/TV for ages 11 to 12
American Federation of Teachers, organization.organization.geographic_scope, United States of America
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family Classics
Left Back: A Century of Failed School Reforms, book.written_work.author, Diane Ravitch
C. Graham Baker, film.producer.film, Tom Brown's School Days
Tom Brown's School Days, film.film.starring, m.04dj0zk
Left Back: A Century of Failed School Reforms, book.written_work.subjects, United States of America
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_for, g.125g1yt_w
Tom Brown's School Days, film.film.country, United States of America
2012 State of the Union Address, time.event.instance_of_recurring_event, State of the Union
Book, freebase.type_hints.included_types, Topic
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Family Drama
Education reform, common.topic.notable_types, Literature Subject
m.05v7cg6, film.performance.film, Tom Brown's School Days
Left Back: A Century of Failed School Reforms, book.book.editions, Left Back: A Century of Failed School Reforms
Gene Towne, people.person.nationality, United States of America
Tom Brown's School Days, film.film.subjects, Rugby School
Literature Subject, type.type.expected_by, Related Literature Subjects
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classic Dramas
Education reform, book.book_subject.works, The Teacher Unions: How They Sabotage Educational Reform and Why
Left Back: A Century of Failed School Reforms, common.topic.notable_types, Book
Left Back: A Century of Failed School Reforms, common.topic.article, m.071t783
Tom Brown's School Days, film.film.genre, Family
Subjects, rdf-schema#range, Literature Subject
Literature Subject, type.type.expected_by, subjects
m.05v7ch0, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, film.film.genre, Film adaptation
Left Back: A Century of Failed School Reforms, book.written_work.subjects, 20th century
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Pre-20th Century Period Pieces
Tom Brown's School Days, film.film.starring, m.05v7cgf
Tom Brown's School Days, film.film.starring, m.04dj0zq
m.05v7cgf, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, common.topic.notable_types, Film
Diane Ravitch, people.person.nationality, United States of America
Tom Brown's School Days, film.film.starring, m.05v7cfl
Literature Subject, freebase.type_profile.published, Published
Tom Brown's School Days, film.film.subjects, Education reform
m.05v7cgn, film.performance.film, Tom Brown's School Days
United States of America, base.biblioness.bibs_topic.is_really, United States of America
Education reform, common.topic.article, m.02mdn
m.0j31vdq, event.speech_or_presentation.speaker_s, Barack Obama
m.05v7cfs, film.performance.film, Tom Brown's School Days
Literature Subject, common.topic.article, m.021y652
State of the Union, time.recurring_event.instances, 2012 State of the Union Address
Tom Brown's School Days, film.film.genre, Historical period drama
Tom Brown's School Days, fictional_universe.work_of_fiction.setting, Rugby School
Tom Brown's School Days, film.film.country, United States of America
Tom Brown's School Days, film.film.starring, m.05v7cfs
Barack Obama, event.public_speaker.speeches_or_presentations, m.0j31vdq
Tom Brown's School Days, film.film.produced_by, Gene Towne
Tom Brown's School Days, film.film.genre, Black-and-white
Diane Ravitch, book.author.book_editions_published, Left Back: A Century of Failed School Reforms
Tom Brown's School Days, book.written_work.original_language, English Language
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas based on classic literature
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.notable_types, Book
Tom Brown's School Days, common.topic.notable_for, g.1256tk41d
Tom Brown's School Days, film.film.produced_by, C. Graham Baker
Literature Subject, freebase.type_profile.kind, Role
Topic, freebase.type_profile.published, Published
Education reform, common.topic.notable_for, g.1257qk2wd
Book, freebase.type_profile.published, Published
Left Back: A Century of Failed School Reforms, book.written_work.subjects, American History
Rugby School, book.book_subject.works, Tom Brown's School Days
Van Nest Polglase, people.person.nationality, United States of America
C. Graham Baker, people.person.nationality, United States of America
Books, type.domain.types, Book
Education reform, film.film_subject.films, Tom Brown's School Days
Tom Brown's School Days, film.film.genre, School story
Rugby School, film.film_subject.films, Tom Brown's School Days
Tom Brown's School Days, film.film.genre, Family Drama
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classics
Tom Brown's School Days, film.film.film_art_direction_by, Van Nest Polglase
The Teacher Unions: How They Sabotage Educational Reform and Why, book.written_work.subjects, American Federation of Teachers
Tom Brown's School Days, film.film.starring, m.05v7chd
Literature Subject, type.type.expected_by, Subject
2012 State of the Union Address, event.public_speaking_event.speech_presentation_discussion, m.0j31vdq
Tom Brown's School Days, film.film.starring, m.05v7cf6
m.04dj0zd, film.film_cut.film, Tom Brown's School Days
Tom Brown's School Days, film.film.starring, m.05v7ch0
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Dramas Based on the Book
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.genre, Non-fiction
m.05v7cf6, film.performance.film, Tom Brown's School Days
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Classic Movies
Tom Brown's School Days, film.film.directed_by, Robert Stevenson
Left Back: A Century of Failed School Reforms, common.topic.notable_for, g.125601r5s
State of the Union, event.type_of_public_presentation.presentations_of_this_type, m.0j31vdq
Education reform, book.book_subject.works, Left Back: A Century of Failed School Reforms
Tom Brown's School Days, media_common.netflix_title.netflix_genres, Drama
Left Back: A Century of Failed School Reforms, book.written_work.subjects, Education
Education reform, event.speech_topic.speeches_or_presentations_on_this_topic, m.0j31vdq
Tom Brown's School Days, film.film.starring, m.05v7cgn
English Language, language.human_language.main_country, United States of America
Film, freebase.type_profile.published, Published
Left Back: A Century of Failed School Reforms, book.written_work.subjects, History
Literature Subject, freebase.type_hints.included_types, Topic
Gene Towne, film.writer.film, Tom Brown's School Days
Works Written About This Topic, type.property.schema, Literature Subject
Tom Brown's School Days, film.film.runtime, m.04dj0zd
Barack Obama, people.person.nationality, United States of America
m.0j31vdq, event.speech_or_presentation.type_or_format_of_presentation, State of the Union
Education reform, film.film_subject.films, Tom Brown's School Days
Education reform, base.schemastaging.context_name.pronunciation, g.125_rjf_8
National Education Association, organization.organization.geographic_scope, United States of America
The Teacher Unions: How They Sabotage Educational Reform and Why, book.book.editions, The Teacher Unions: How the NEA and AFT Sabotage Reform and Hold Students, Parents, Teachers, and Taxpayers Hostage to Bureaucracy
The Teacher Unions: How They Sabotage Educational Reform and Why, common.topic.article, m.0766g9c
m.0cjg0mq, common.webpage.topic, Tom Brown's School Days
Works Written About This Topic, type.property.master_property, Subjects
Tom Brown's School Days, media_common.adapted_work.adaptations, Tom Brown's School Days
Tom Brown's School Days, award.ranked_item.appears_in_ranked_lists, m.0bwjn90
Book, freebase.type_profile.strict_included_types, Topic
Tom Brown's School Days, book.written_work.subjects, Rugby School
Book, type.type.domain, Books
Subjects, type.property.expected_type, Literature Subject
United States of America, base.biblioness.bibs_topic.subsumes, United States of America
Tom Brown's School Days, film.film.starring, m.05v7cg6
Literature Subject, type.type.expected_by, Subjects
Tom Brown's School Days, film.film.film_set_decoration_by, Darrell Silvera

Answer: United States of America