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 guitar did the composer of "Estudio" use? 
Knowledge Triplets: m.0jxfnt3, award.award_nomination.award_nominee, Andrés Segovia
Andrés Segovia, music.artist.album, 1927-1939 Recordings, Volume 2
Andrés Segovia, music.artist.album, A Portrait
Composer, freebase.type_profile.published, Published
Andrés Segovia, book.author.works_written, Diatonic Major and Minor Scales
Musical composition, freebase.equivalent_topic.equivalent_type, Composition
Composer, owl#inverseOf, Works Composed
m.01thrwy, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, music.artist.contribution, m.01thrvf
m.01thrtp, music.recording_contribution.contributor, Andrés Segovia
Madrid, location.location.containedby, Spain
m.01thrwk, music.recording_contribution.album, 1927-1939 Recordings, Volume 1
Musical Recording, freebase.type_hints.included_types, Topic
m.01thrvt, music.recording_contribution.album, The Segovia Collection, Volume 3: My Favorite Works
m.01thrv1, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, music.artist.album, John Williams
Song, type.property.expected_type, Composition
Andrés Segovia, music.composer.compositions, Estudio
Andrés Segovia, music.artist.contribution, m.01thrsf
Composition, type.type.properties, Arrangements
Andrés Segovia, music.artist.album, Rodrigo: Fantasía para un gentilhombre, Ponce: Concierto del Sur, Boccherini: Guitar Concerto (Symphony of the Air, feat. conductor: Enrique Jordá)
Estudio, music.composition.composer, Andrés Segovia
Composition, type.type.properties, Date completed
m.0h1101r, film.performance.actor, Andrés Segovia
Andrés Segovia, music.artist.label, EMI
Place(s) composed, rdf-schema#domain, Composition
Estudio, music.recording.engineer, Mike Ross-Trevor
Estudio, common.topic.notable_for, g.1yg9hc618
m.01thrx3, music.recording_contribution.album, BBC Legends: Segovia
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 9: The Romantic Guitar
Andrés Segovia, music.artist.album, Spanish Guitar Magic
m.01thrs_, music.recording_contribution.contributor, Andrés Segovia
m.01thrx3, music.recording_contribution.contributor, Andrés Segovia
Lyricist, owl#inverseOf, Lyrics Written
m.0k15kh9, award.award_nomination.nominated_for, Segovia Golden Jubilee
Estudio, music.recording.song, Estudio
Composition, type.type.properties, Lyrics Website
m.09rz82x, award.award_honor.award_winner, Andrés Segovia
Male, medicine.risk_factor.diseases, heart attack
Andrés Segovia, music.artist.contribution, m.01thrx9
Musical Recording, freebase.type_profile.kind, Definition
Estudio, music.recording.releases, Guitar Virtuoso: 500 Years of Classic Guitar (feat. guitar: John Williams)
Estudio, common.topic.notable_types, Musical Recording
Song, rdf-schema#range, Composition
Andrés Segovia, music.artist.contribution, m.01thrx3
m.0_lbk28, award.award_honor.honored_for, Guitar Solos: Music of Albéniz & Granados / Guitar Recital
Andrés Segovia, music.artist.album, The Genius of Andres Segovia A Bach Recital
Andrés Segovia, music.composer.compositions, Oración: Study in E
m.0jzmj48, award.award_honor.honored_for, Segovia Golden Jubilee
Andrés Segovia, music.artist.album, Segovia: The Ascona Recital & Other
Composition, type.type.properties, Place(s) composed
Andrés Segovia, music.artist.album, Famous Guitar Works: The Art of Segovia
Musician, people.profession.specializations, Guitarist
John Williams, people.person.profession, Musician
Composition, type.type.expected_by, Lyrics Written
Andrés Segovia, book.author.works_written, Slur Exercises and Chromatic Octaves
Andrés Segovia, book.author.works_written, Segovia-Original Compositions
Composer, type.type.expected_by, Composer
m.01thrx9, music.recording_contribution.album, The Legendary Segovia
Andrés Segovia, music.artist.genre, Classical music
Andrés Segovia, music.composer.compositions, Etude for Guitar (\"Estudio Sin Luz\")
Language, type.property.schema, Composition
heart attack, medicine.disease.risk_factors, Male
Musical Recording, type.type.expected_by, Recorded versions
Andrés Segovia, film.person_or_entity_appearing_in_film.films, m.0jmy_7_
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 5: The Legendary Andrés Segovia: Five Centuries of the Spanish Guitar
m.01thrv1, music.recording_contribution.album, Rodrigo: Fantasía para un gentilhombre, Ponce: Concierto del Sur, Boccherini: Guitar Concerto (Symphony of the Air, feat. conductor: Enrique Jordá)
John Williams, people.person.gender, Male
Composition, type.type.properties, Composer
Composition, type.type.expected_by, Composition
Composition, freebase.type_profile.strict_included_types, Non-Agent
m.01thrt5, music.recording_contribution.album, The Segovia Collection, Volume 1: The Legendary Andrés Segovia in an All-Bach Program
Andrés Segovia, music.artist.album, Bach: Guitar Works - Castelnuovo-Tedesco: Guitar Concerto
Musical Recording, freebase.type_profile.strict_included_types, Abstract
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 1: The Legendary Andrés Segovia in an All-Bach Program
m.01thrvt, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, music.artist.album, The Baroque Repertoire
John Williams, music.group_member.instruments_played, Guitar
Andrés Segovia, music.artist.contribution, m.01thrw5
Musical Recording, type.type.domain, Music
m.0_hbmnp, award.award_honor.award_winner, Andrés Segovia
Estudio, common.topic.notable_for, g.1258j5s24
m.063fzv9, royalty.noble_title_tenure.noble_person, Andrés Segovia
Musical Recording, type.type.properties, Recording of Composition
Oración: Study in E, music.composition.composer, Andrés Segovia
m.01thrvf, music.recording_contribution.album, Five Centuries of the Spanish Guitar
m.0jmy_7_, film.personal_film_appearance.person, Andrés Segovia
Composition, type.type.expected_by, State song
Andrés Segovia, music.group_member.membership, m.043c_jy
Recording of Composition, type.property.master_property, Recorded versions
Composition, type.type.expected_by, Includes
Composition, type.type.properties, Date of first performance
BBC Legends: Segovia, music.album.contributor, m.01thrx3
John Williams, music.artist.genre, Classical music
Estudio, music.recording.tracks, Estudio
Andrés Segovia, music.artist.contribution, m.01thrvm
Estudio, music.recording.tracks, Medley 2: Estudio
m.010nddd7, music.track_contribution.track, Estudio
Andrés Segovia, music.artist.contribution, m.01thrwy
Composition, type.type.properties, Language
Composition, type.type.expected_by, Song
m.01thrv_, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, common.topic.image, Andres Segovia
m.01thrsf, music.recording_contribution.contributor, Andrés Segovia
m.0qgzscc, music.track_contribution.track, Estudio
Composer, freebase.type_profile.strict_included_types, Topic
Andrés Segovia, music.artist.contribution, m.01thrtw
Estudio, music.recording.contributions, m.010nddd7
Recording of Composition, type.property.expected_type, Composition
m.01thrt5, music.recording_contribution.contributor, Andrés Segovia
Estudio, music.recording.artist, John Williams
Andrés Segovia, music.artist.contribution, m.01thrsm
m.01thrx9, music.recording_contribution.contributor, Andrés Segovia
Composition, freebase.type_profile.strict_included_types, Topic
Andrés Segovia, common.topic.article, m.0jg3g
Andrés Segovia, people.person.profession, Guitarist
Estudio, music.recording.releases, Guitar Recital
Composition, type.type.properties, Part of
m.0_hbmnp, award.award_honor.honored_for, An Evening with Andrés Segovia
Andrés Segovia, music.artist.contribution, m.01thrtp
m.01thrsm, music.recording_contribution.album, The Segovia Collection, Volume 8
m.01thrs_, music.recording_contribution.album, A Centenary Celebration
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 2: Ponce, Rodrigo, Torroba
Estudio, music.composition.composer, Andrés Segovia
Andrés Segovia, music.artist.contribution, m.01thrwc
Composition, type.type.expected_by, Part of
m.01thrtp, music.recording_contribution.album, The Baroque Repertoire
Composition, type.type.properties, Subjects
Andrés Segovia, book.author.works_written, Segovia: Mi Libro de la Guitarra
Place of first performance, rdf-schema#domain, Composition
Estudio, music.recording.producer, Roy Emerson
m.010nddd7, music.track_contribution.contributor, John Williams
Andrés Segovia, award.award_nominee.award_nominations, m.0k15kh9
Estudio, common.topic.notable_types, Composition
Andrés Segovia, award.award_nominee.award_nominations, m.0jxfnt3
Estudio, music.recording.releases, Guitar Moods
Estudio, common.topic.notable_for, g.1259zkq4w
Composition, type.type.properties, Includes
Composer, type.type.domain, Music
m.01thrtw, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, people.deceased_person.place_of_death, Madrid
Andrés Segovia, music.artist.album, Andres Segovia 1950' s American Recordings Volume 4
Andrés Segovia, award.award_winner.awards_won, m.0_lbk28
Andrés Segovia, music.artist.album, The Great Master
Andrés Segovia, music.artist.album, Guitar Solos: Music of Albéniz & Granados / Guitar Recital
Composer, type.type.properties, Works Composed
Estudio, music.recording.artist, John Williams
Recording of Composition, rdf-schema#range, Composition
Andrés Segovia, award.award_winner.awards_won, m.09rz82x
Composition, freebase.type_profile.strict_included_types, Inanimate
m.01thrv_, music.recording_contribution.album, The Segovia Collection, Volume 2: Ponce, Rodrigo, Torroba
Composition, freebase.type_profile.strict_included_types, Abstract
m.01thrsm, music.recording_contribution.contributor, Andrés Segovia
Composition, type.type.expected_by, Cataloged composition
m.0jzmj48, award.award_honor.award_winner, Andrés Segovia
Estudio, music.recording.canonical_version, Estudio
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 8
Composition, type.type.properties, Recorded versions
Linares, Jaén, location.location.containedby, Spain
Andrés Segovia, music.artist.album, Obras breves españolas
Andrés Segovia, royalty.noble_person.titles, m.063fzv9
Andrés Segovia, award.award_winner.awards_won, m.0jzmj48
Composer, type.property.expected_type, Composer
m.01thrsf, music.recording_contribution.album, Famous Guitar Works: The Art of Segovia
Composition, type.type.expected_by, Musical compositions about this topic
Andrés Segovia, music.artist.album, Estampas Espanolas
Composition, type.type.properties, Recorded as album
Andrés Segovia, music.artist.contribution, m.01thrs_
Composer, type.property.reverse_property, Works Composed
Composition, freebase.documented_object.documentation, m.02tc4hy
Estudio, music.recording.artist, Andrés Segovia
Andrés Segovia, music.artist.contribution, m.01thrv1
Pictura: An Adventure in Art, film.film.music, Andrés Segovia
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 6: Manuel Ponce Sonatas (Andrés Segovia)
Estudio, common.topic.notable_for, g.1yn5c5ttz
Estudio, music.recording.contributions, m.0qgzscc
m.01thrwy, music.recording_contribution.album, A Portrait
Andrés Segovia, film.person_or_entity_appearing_in_film.films, m.0jmy_7t
Andrés Segovia, music.artist.album, Segovia - The EMI Recordings 1927-39
Language, rdf-schema#domain, Composition
Andrés Segovia, people.deceased_person.cause_of_death, heart attack
Andrés Segovia, music.artist.album, Canciones populares
m.0jmy_7t, film.personal_film_appearance.person, Andrés Segovia
Composer, type.property.schema, Composition
m.043c_jy, music.group_membership.member, Andrés Segovia
Estudio, music.single.versions, Estudio
m.01thrvf, music.recording_contribution.contributor, Andrés Segovia
Recording of Composition, type.property.schema, Musical Recording
m.0_lbk28, award.award_honor.award_winner, Andrés Segovia
Andrés Segovia, people.person.nationality, Spain
m.0qgzscc, music.track_contribution.contributor, John Williams
Composition, type.type.properties, Lyricist
Andrés Segovia, music.artist.contribution, m.01thrv_
Andrés Segovia, music.artist.album, The Master
m.01thrwc, music.recording_contribution.contributor, Andrés Segovia
Composition, type.type.expected_by, composition
Andrés Segovia, film.actor.film, m.0h1101r
Andrés Segovia, music.artist.album, The Early Recordings, Volume 1 & 2 (disc 1)
m.01thrtw, music.recording_contribution.album, The Segovia Collection, Volume 5: The Legendary Andrés Segovia: Five Centuries of the Spanish Guitar
Andrés Segovia, music.artist.album, The Gold Collection
Place of first performance, type.property.schema, Composition
Composer, rdf-schema#range, Composer
Composition, freebase.type_profile.kind, Definition
Andrés Segovia, people.person.profession, Musician
Lyricist, rdf-schema#domain, Composition
Composer, rdf-schema#domain, Composition
Madrid, base.biblioness.bibs_location.country, Spain
Andrés Segovia, common.topic.image, Segovia signature
Andrés Segovia, music.artist.album, Poet of the Guitar
Andrés Segovia, common.topic.notable_types, Composer
Composition, freebase.type_profile.published, Published
Andrés Segovia, people.person.gender, Male
Andrés Segovia, music.artist.album, An Evening with Andrés Segovia
m.01thrvm, music.recording_contribution.album, The Segovia Collection, Volume 6: Manuel Ponce Sonatas (Andrés Segovia)
Spain, location.country.capital, Madrid
Composition, type.type.properties, Kind of composition
Composition, common.topic.article, m.02tc4hy
Canciones populares, music.album.artist, Andrés Segovia
Estudio, music.recording.releases, Latin American Guitar Music by Barrios and Ponce
Andrés Segovia, music.artist.album, Segovia Golden Jubilee
Estudio, music.composition.recordings, Estudio
Andrés Segovia, symbols.name_source.namesakes, 3822 Segovia
Andrés Segovia, music.artist.album, Golden Guitar Recital
Composition, type.type.properties, Place of first performance
Andrés Segovia, music.artist.contribution, m.01thrwk
Place(s) composed, type.property.schema, Composition
Composition, type.type.expected_by, Arrangement of
Andrés Segovia, music.artist.album, A Centenary Celebration
Andrés Segovia, music.artist.album, Five Centuries of the Spanish Guitar
m.01thrwk, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, music.artist.album, BBC Legends: Segovia
Oración: Study in E, common.topic.notable_types, Composition
Andrés Segovia, music.group_member.instruments_played, Guitar
Andrés Segovia, music.artist.album, Quadromania: Andrés Segovia: Recuerdos de la Alhambra
Andrés Segovia, music.artist.album, The Segovia Collection, Volume 3: My Favorite Works
Andrés Segovia, music.artist.album, Maestro, maestro
Topic, freebase.type_profile.published, Published
Andrés Segovia, common.topic.notable_for, g.1256lddt8
Lyricist, type.property.schema, Composition
Andrés Segovia, music.group_member.instruments_played, Guitar
m.01thrwc, music.recording_contribution.album, 1927-1939 Recordings, Volume 2
Guitarist, people.profession.specialization_of, Musician
Composition, freebase.type_hints.included_types, Topic
Composition, type.type.expected_by, Works Composed
Linares, Jaén, location.location.people_born_here, Andrés Segovia
Andrés Segovia, music.artist.contribution, m.01thrvt
John Williams, people.person.profession, Guitarist
Composition, type.type.properties, Key
Musical Recording, freebase.type_profile.strict_included_types, Non-Agent
Lyricist, type.property.reverse_property, Lyrics Written
m.01thrw5, music.recording_contribution.contributor, Andrés Segovia
Andrés Segovia, music.artist.album, The Legendary Andrés Segovia: Guitar Etudes
Andrés Segovia, book.author.works_written, Andres Segovia - 20 Studies for the Guitar
Musical Recording, freebase.type_profile.strict_included_types, Topic
Andrés Segovia, music.artist.album, The Legendary Segovia
Musical Recording, freebase.type_profile.published, Published
Andrés Segovia, music.artist.album, The Best of Guitar Classics
Andrés Segovia, people.person.place_of_birth, Linares, Jaén
m.01thrw5, music.recording_contribution.album, The Early Recordings, Volume 1 & 2 (disc 1)
Composition, freebase.type_profile.equivalent_topic, Musical composition
Andrés Segovia, music.artist.album, The Genius of Andrés Segovia: Five Centuries of the Classical Guitar
Andrés Segovia, music.artist.contribution, m.01thrt5
Andrés Segovia, film.music_contributor.film, Pictura: An Adventure in Art
BBC Legends: Segovia, music.album.artist, Andrés Segovia
Composition, type.type.expected_by, Recording of Composition
Composer, freebase.type_hints.included_types, Topic
Andrés Segovia, music.artist.album, 1927-1939 Recordings, Volume 1
m.01thrvm, music.recording_contribution.contributor, Andrés Segovia
Composition, type.type.expected_by, song
Composition, type.type.domain, Music
John Williams, music.group_member.instruments_played, Guitar
Andrés Segovia, award.award_winner.awards_won, m.0_hbmnp
Recording of Composition, rdf-schema#domain, Musical Recording
m.0k15kh9, award.award_nomination.award_nominee, Andrés Segovia
Composition, type.type.expected_by, Compositions
Composition, type.type.expected_by, Score of

Answer: Guitar