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 instrument does the artist nominated for Portrait of John Williams use? 
Knowledge Triplets: Musician, people.profession.specializations, Composer
Musical Album, type.type.expected_by, albums
John Williams, music.artist.album, Echoes of Spain
Guitarist, freebase.equivalent_topic.equivalent_type, Guitarist
m.0y_pwxp, award.award_honor.honored_for, Portrait of John Williams
John Williams, music.artist.contribution, m.01vs8vp
m.01vs8s_, music.recording_contribution.contributor, John Williams
John Williams, music.artist.album, The Very Best of John Williams
Musical Album, type.type.expected_by, Album or Release Supporting
Musical Album, type.type.properties, Compositions
Musical Release, freebase.type_profile.strict_included_types, Non-Agent
John Williams, common.topic.notable_types, Guitarist
John Williams, music.featured_artist.recordings, Movement 5: Grace
Portrait of John Williams, music.album.primary_release, Portrait of John Williams
Release type, type.property.expected_type, Musical Album Type
m.0y_q3nz, freebase.valuenotation.is_reviewed, Award
Musical Album, type.type.expected_by, Albums Owned
John Williams, music.artist.contribution, m.01vs8w5
m.04dm30n, base.ontologies.ontology_class_mapping.freebase_topic, Album
m.01vs8tk, music.recording_contribution.album, Latin American Guitar Music by Barrios and Ponce
Musical Album, type.type.expected_by, Soundtrack
John Williams, music.artist.album, Lute Suites, BWV 995, 996, 997, 999 & 1000
Musical Release, type.type.properties, Release of
Consumer product, freebase.type_profile.strict_included_types, Inanimate
Lute Suites, BWV 995, 996, 997, 999 & 1000, music.album.artist, John Williams
Artist, type.property.reverse_property, Albums
Portrait of John Williams, award.award_winning_work.awards_won, m.0y_pwxp
m.0y_q3nz, freebase.valuenotation.is_reviewed, Nominated work
Musical Release, freebase.type_hints.included_types, Topic
1983 BRIT Awards, award.award_ceremony.awards_presented, m.0y_pwxp
John Williams, music.artist.album, Iberia
John Williams, music.artist.album, The Ultimate Guitar Collection
m.0y_pwxp, freebase.valuenotation.is_reviewed, Ceremony
John Williams, music.group_member.membership, m.0rt_f8n
Album, common.topic.image, Harpin On The Blues.jpg
John Williams, music.artist.album, Plays Schubert & Giuliani
Musical Album, freebase.type_profile.strict_included_types, Abstract
John Williams, people.person.gender, Male
The Four Lute Suites, music.album.artist, John Williams
Musical Album, type.type.expected_by, Album
m.01vs8vp, music.recording_contribution.album, The Seville Concert
John Williams, music.artist.album, g.1236ylgd
Musical Release, freebase.type_profile.published, Published
John Williams, music.artist.album, John Williams Plays the Movies
Guitarist, freebase.type_hints.included_types, Topic
Musical Release, type.type.expected_by, Releases
Release type, type.property.reverse_property, Albums
John Williams, music.artist.album, Cavatina - The Complete Fly and Cube Recordings
Lute Suites, BWV 995, 996, 997, 999 & 1000, common.topic.notable_types, Musical Album
m.0y_q3nz, award.award_nomination.award, Brit Award for Best Classical Recording
m.02wn6s_, education.education.student, John Williams
John Williams, people.person.education, m.02wn6s_
m.0y_q3nz, freebase.valuenotation.is_reviewed, Year
Musical Album, type.type.expected_by, m.0kpv5q
John Williams, music.artist.album, Gitarre zum Geniessen
John Williams, people.person.nationality, Australia
m.0y_pwxp, freebase.valuenotation.is_reviewed, Year
Melbourne, base.biblioness.bibs_location.country, Australia
Album, base.ontologies.ontology_class.equivalent_classes, m.04dm30n
Portrait of John Williams, music.album.artist, John Williams
Musical Album, type.type.expected_by, album
m.01vs8w5, music.recording_contribution.album, Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos
The Four Lute Suites, common.topic.notable_types, Musical Album
Consumer product, freebase.type_profile.strict_included_types, Non-Agent
Musical Album, type.type.expected_by, Albums Wanted
John Williams, common.topic.webpage, m.03l5rff
Brit Award for Best Classical Recording, award.award_category.winners, m.0y_pwxp
Musical Album, type.type.domain, Music
John Williams, music.artist.album, Concertos
John Williams, music.artist.album, The Seville Concert
Consumer product, freebase.type_profile.published, Published
John Williams, music.artist.album, El Diablo Suelto
Portrait of John Williams, common.topic.notable_for, g.12567w__m
Artist, type.property.schema, Musical Album
John Williams, music.artist.contribution, m.01vs8v3
John Williams, music.artist.album, Bachianas brasileiras Nos. 2 & 5 / Five Preludes for Guitar / Concerto for Guitar & Small Orchestra
Lute Suite no. 4 / Chaconne, BWV 1004 / Prelude, Fugue & Allegro, BWV 998 and other selections, common.topic.notable_types, Musical Album
m.01vs8ty, music.recording_contribution.album, Classic Williams: Romance of the Guitar (John Williams)
Musical Album, type.type.expected_by, Music Albums
Musical Album, type.type.expected_by, From Album
m.01vs8st, music.recording_contribution.contributor, John Williams
John Williams, common.topic.image, Jwcrdba86
Portrait of John Williams, common.topic.notable_types, Musical Release
Albums, rdf-schema#range, Musical Album
John Williams, music.artist.contribution, m.01vs8tr
John Williams, music.artist.label, Sony Music Entertainment
Musical Album, type.type.expected_by, Album Name
John Williams, music.artist.album, Chefs - d'oeuvre de la guitare
1983 BRIT Awards, award.award_ceremony.nominees, m.0y_q3nz
Sony Records, music.record_label.artist, John Williams
John Williams, music.artist.album, The Great Paraguayan (From the Jungles of Paraguay)
John Williams, music.artist.contribution, m.01vs8v9
m.0y_pwxp, award.award_honor.award_winner, John Williams
Sylvia Brooks, common.topic.subjects, Album
m.0y_pwxp, freebase.valuenotation.is_reviewed, Winning work
Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos, music.album.contributor, m.01vs8w5
Release type, owl#inverseOf, Albums
m.01vs8v3, music.recording_contribution.contributor, John Williams
John Williams, music.artist.album, The Guitar Is the Song: A Folksong Collection
Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos, music.album.artist, John Williams
m.0y_q3nz, award.award_nomination.award_nominee, John Williams
Musical Release, type.type.expected_by, Primary release
Musical Album, type.type.expected_by, Musical Album
m.0y_q3nz, award.award_nomination.nominated_for, Portrait of John Williams
m.01vs8w5, music.recording_contribution.contributor, John Williams
John Williams, music.artist.album, John Williams Plays Music of Agustín Barrios Mangoré
John Williams, music.group_member.membership, m.0n62xks
John Williams, music.artist.album, Guitar Moods
Lute Suite no. 4 / Chaconne, BWV 1004 / Prelude, Fugue & Allegro, BWV 998 and other selections, music.album.artist, John Williams
Album content type, type.property.reverse_property, Albums
John Williams, music.artist.album, To The Edge Of Dream / Toward The Sea / Vers, L'Arc-En-Ciel, Palma / Folios / Etc.
John Williams, music.artist.contribution, m.01vs8tk
Guitarist, type.type.domain, Music
Musical Album, freebase.documented_object.documentation, m.01z0msj
John Williams, music.group_member.instruments_played, Guitar
m.0rt_f8n, music.group_membership.member, John Williams
John Williams, music.artist.album, Fragments of a Dream
John Williams, music.artist.album, The Music of John Williams: 40 Years of Film Music
Album, common.topic.image, Earlyalbum1
Release type, type.property.schema, Musical Album
Album content type, type.property.schema, Musical Album
Musical Album, type.type.expected_by, Next Album
Album, common.topic.image, Call My Bluff.jpg
Musical Album, type.type.properties, Featured artists
Initial release date, rdf-schema#domain, Musical Album
John Williams, music.artist.album, Spanish Dreams
The Music of John Williams: 40 Years of Film Music, music.album.release_type, Album
John Williams, music.artist.album, The Essential Collection
Brit Award for Best Classical Recording, award.award_category.nominees, m.0y_q3nz
John Williams, music.artist.contribution, m.01vs8st
m.0kpv5q, type.property.expected_type, Musical Album
Portrait of John Williams, common.topic.notable_for, g.125bp5fwk
John Williams, music.artist.album, Steve Gray: Guitar Concerto; Richard Harvey: Concerto Antico (London Symphony Orchestra feat. conductor: Paul Daniel, guitar: John Williams)
Musical Album, type.type.properties, Primary release
Guitarist, freebase.type_profile.equivalent_topic, Guitarist
Progressive rock, music.genre.parent_genre, Rock music
John Williams, music.artist.album, Celebration
Musician, people.profession.specializations, g.1233lk8r
Artist, owl#inverseOf, Albums
Musical Album, freebase.type_profile.published, Published
Musical Album, type.type.expected_by, Musical albums
Musical Album, type.type.expected_by, Glee album
John Williams, people.person.profession, Guitarist
The Music of John Williams: 40 Years of Film Music, common.topic.notable_types, Musical Album
Album or Release Supporting, owl#inverseOf, Supporting tours
Musical Album, type.type.properties, Album content type
Musical Album, freebase.type_profile.kind, Definition
John Williams, music.artist.album, Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos
John Williams, music.artist.album, Together
The Four Lute Suites, music.album.release_type, Album
Musical Album, type.type.properties, Initial release date
Portrait of John Williams, music.album.release_type, Album
The Music of John Williams: 40 Years of Film Music, music.album.artist, John Williams
John Williams, award.award_winner.awards_won, m.0jzbg05
Album, common.topic.article, m.02lx31
John Williams, music.artist.album, Together: The Ultimate Collection
John Williams, film.actor.film, m.0gz0145
m.01vs8tk, music.recording_contribution.contributor, John Williams
John Williams, music.artist.album, Portrait
John Williams, common.topic.article, m.0146q8
m.0jzbg05, award.award_honor.honored_for, Julian And John (Works By Lawes, Carulli, Albeniz, Granados)
John Williams, music.artist.album, Together Again
m.0y_pwxp, award.award_honor.ceremony, 1983 BRIT Awards
John Williams, music.artist.album, John Williams Plays Vivaldi Concertos
Musical Album, type.type.expected_by, Recorded as album
Album, common.topic.subjects, Sylvia Brooks
John Williams, music.artist.origin, London
John Williams, music.artist.album, From Australia
Australia, location.country.administrative_divisions, Melbourne
Album or Release Supporting, rdf-schema#range, Musical Album
Consumer product, freebase.type_profile.strict_included_types, Topic
Musical Album, type.type.properties, Tracks
m.01vs8v9, music.recording_contribution.contributor, John Williams
John Williams, award.award_winner.awards_won, m.0y_pwxp
John Williams, award.award_nominee.award_nominations, m.0k0bnr7
Guitarist, freebase.type_profile.strict_included_types, Topic
John Williams, music.artist.album, The Best of John Williams
John Williams, film.actor.film, m.0gyzy56
m.01vs8ty, music.recording_contribution.contributor, John Williams
Musical Album, type.type.properties, Buy or download Web page
John Williams, music.artist.genre, Progressive rock
Release type, rdf-schema#range, Musical Album Type
m.0kpv5q, rdf-schema#range, Musical Album
John Williams, music.artist.album, Guitar Concertos (English Chamber Orchestra feat. conductor: Charles Groves; feat. guitar: John Williams)
Musical Album, freebase.type_profile.strict_included_types, Inanimate
Musical Album, type.type.properties, Releases
John Williams, music.artist.genre, Rock music
Album content type, owl#inverseOf, Albums
Movement 5: Grace, music.recording.featured_artists, John Williams
m.07wwmny, award.award_honor.award_winner, John Williams
John Williams, music.artist.album, Trésors guitare classique
Sylvia Brooks, common.topic.subjects, Musician
Album content type, rdf-schema#domain, Musical Album
m.0y_q3nz, award.award_nomination.ceremony, 1983 BRIT Awards
John Williams, freebase.valuenotation.is_reviewed, Date of birth
m.0k0bnr7, award.award_nomination.nominated_for, Julian And John (Works By Lawes, Carulli, Albeniz, Granados)
John Williams, music.artist.album, The Spanish Guitar Anthology
John Williams, music.artist.album, Duos
John Williams, music.artist.label, Sony Records
John Williams, music.artist.album, Marcello Concertos (John Williams)
John Williams, people.person.profession, Musician
m.01vs8tr, music.recording_contribution.album, Gitarre zum Geniessen
Artist, rdf-schema#domain, Musical Album
m.0gyzy56, film.performance.actor, John Williams
Musical Album, type.type.expected_by, Albums I Like
Musician, common.topic.subject_of, Sylvia Brooks
John Williams, music.artist.genre, Classical music
m.0k0bnr7, award.award_nomination.award_nominee, John Williams
Album, freebase.equivalent_topic.equivalent_type, Musical Album
Lute Suite no. 4 / Chaconne, BWV 1004 / Prelude, Fugue & Allegro, BWV 998 and other selections, music.album.release_type, Album
John Williams, music.artist.album, The Guitarist
John Williams, award.award_nominee.award_nominations, m.0y_q3nz
Portrait of John Williams, freebase.valuenotation.is_reviewed, Release type
Album or Release Supporting, type.property.expected_type, Musical Album
John Williams, music.group_member.instruments_played, Guitar
Album, common.topic.image, In The New Age.jpg
Musical Album, type.type.expected_by, Music
Lute Suites, BWV 995, 996, 997, 999 & 1000, music.album.release_type, Album
m.0gz0145, film.performance.actor, John Williams
John Williams, people.person.profession, Composer
m.0jzbg05, award.award_honor.award_winner, John Williams
John Williams, music.group_member.membership, m.01vs8sl
John Williams, music.artist.album, Spanish Guitar Favorites
John Williams, common.topic.notable_for, g.1255l0n4v
Musical Album, type.type.expected_by, Albums
John Williams, music.artist.contribution, m.01vs8vh
m.01vs8sl, music.group_membership.member, John Williams
John Williams, music.artist.album, Bridges
Musical Album, type.type.properties, Supporting tours
Musical Album, freebase.type_profile.strict_included_types, Non-Agent
m.01vs8vh, music.recording_contribution.album, The Great Paraguayan (From the Jungles of Paraguay)
Sylvia Brooks, common.topic.subject_of, Album
Portrait of John Williams, music.album.releases, Portrait of John Williams
Album or Release Supporting, type.property.reverse_property, Supporting tours
Portrait of John Williams, common.topic.notable_for, g.125cngpqb
Release type, rdf-schema#domain, Musical Album
Musical Release, freebase.type_profile.kind, Definition
Musical Album, type.type.properties, Release type
Musical Album, type.type.properties, Genre
Album, common.topic.subject_of, Sylvia Brooks
Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos, music.album.release_type, Album
Musical Album, freebase.type_profile.strict_included_types, Topic
Musical Album, type.type.expected_by, Release of
m.01vs8v9, music.recording_contribution.album, Spanish Guitar Music
Album, common.topic.image, The ABCs Of Harmonica
John Williams, music.artist.album, Guitar Recital
m.0n62xks, music.group_membership.member, John Williams
Album, common.topic.image, Video Cowboy.jpg
m.0y_pwxp, freebase.valuenotation.is_reviewed, Award category
Album, common.topic.image, Harmonica USA Live.jpg
Musical Album, type.type.properties, Artist
Composer, people.profession.specialization_of, Musician
Musical Album, type.type.expected_by, Live Recordings
Albums, type.property.expected_type, Musical Album
John Williams, music.artist.album, The Magic Box
John Williams, music.artist.album, Classic Williams: Romance of the Guitar (John Williams)
John Williams, people.person.place_of_birth, Melbourne
m.03l5rff, common.webpage.topic, John Williams
Album, common.topic.image, 02bj95f.jpeg
Musical Release, freebase.type_profile.strict_included_types, Topic
m.0y_q3nz, freebase.valuenotation.is_reviewed, Award Nominee
John Williams, music.artist.contribution, m.01vs8s_
Guitarist, freebase.type_profile.published, Published
Musical Album, freebase.type_profile.equivalent_topic, Album
London, base.biblioness.bibs_topic.subsumes, London
John Williams, music.artist.album, The Four Lute Suites
London, base.biblioness.bibs_topic.is_really, London
m.01vs8st, music.recording_contribution.album, Guitar Concertos (English Chamber Orchestra feat. conductor: Charles Groves; feat. guitar: John Williams)
John Williams, music.artist.album, Spanish Guitar Music
Musical Album, common.topic.article, m.01z0msj
John Williams, music.artist.album, Latin American Guitar Music by Barrios and Ponce
Musician, people.profession.specializations, Guitarist
Topic, freebase.type_profile.published, Published
John Williams, music.artist.album, Concierto de Aranjuez / Fantasía para un gentilhombre
John Williams, music.artist.album, Portrait of John Williams
John Williams Plays Vivaldi Concertos, music.album.release_type, Album
John Williams, music.artist.album, Julian And John (Works By Lawes, Carulli, Albeniz, Granados)
John Williams, music.artist.album, g.11bv1pt1m_
Musical Album, type.type.expected_by, Previous Album
John Williams, music.artist.album, Cavatina
Melbourne, location.location.containedby, Australia
John Williams, music.artist.album, The Height Below
Portrait of John Williams, common.topic.notable_types, Consumer product
John Williams, freebase.valuenotation.is_reviewed, Gender
John Williams, music.artist.album, g.11b7_l5f32
Portrait of John Williams, music.artist.album, John Williams
Initial release date, type.property.schema, Musical Album
Musical Release, type.type.domain, Music
John Williams, music.artist.contribution, m.01vs8ty
Musical Album, type.type.expected_by, Album appearance
Album, common.topic.image, New Toys.jpg
John Williams, music.artist.album, Guitar Recital: Paganini, Scarlatti, Villa-Lobos & Giuliani
John Williams, music.artist.album, Gitarre
John Williams, award.award_winner.awards_won, m.07wwmny
John Williams, music.artist.album, Virtuoso Variations for Guitar
John Williams, music.artist.album, From a Bird
Rodrigo: Concierto de Aranjuez / Fantasia para un gentilhombre / Giuliani, Vivaldi: Guitar Concertos, common.topic.notable_types, Musical Album
Portrait of John Williams, award.award_nominated_work.award_nominations, m.0y_q3nz
John Williams Plays Vivaldi Concertos, common.topic.notable_types, Musical Album
John Williams, music.artist.home_page, .
Albums, type.property.master_property, Artist
Consumer product, freebase.type_hints.included_types, Topic
Musical Album, type.type.properties, Musical contributions
m.0y_pwxp, freebase.valuenotation.is_reviewed, Award winner
m.01vs8tr, music.recording_contribution.contributor, John Williams
John Williams, freebase.valuenotation.is_reviewed, Place of birth
John Williams, music.artist.album, Places Between
m.0y_pwxp, award.award_honor.award, Brit Award for Best Classical Recording
m.01vs8vp, music.recording_contribution.contributor, John Williams
John Williams Plays Vivaldi Concertos, music.album.artist, John Williams
John Williams, music.artist.album, Lute Suite no. 4 / Chaconne, BWV 1004 / Prelude, Fugue & Allegro, BWV 998 and other selections
m.01vs8vh, music.recording_contribution.contributor, John Williams
Portrait of John Williams, common.topic.notable_types, Musical Album
Musical Album, freebase.type_hints.included_types, Topic
m.0n62xks, music.group_membership.role, Guitar
Melbourne, location.administrative_division.country, Australia
John Williams, music.artist.album, Concierto de Aranjuez / Fantasía para un gentilhombre (feat. guitar: John Williams)
John Williams, music.artist.album, g.11bv1lv_6y
Guitarist, people.profession.specialization_of, Musician
John Williams, people.person.profession, g.1233lk8r

Answer: Guitar