What is <instrument> of <harmonica> ?
[]
Which means {instrument} for {harmonica} ?
SELECT DISTINCT ?o WHERE { ?o property:instrument resource:harmonica }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>  ?answer. ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1303> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q51290>. }
select distinct ?answer where { ?answer wdt:P1303 wd:Q51290}
Andy Irvine Wayne Raney Dieter Bohlen Michael Hirte Darrell Nulisch Kim Wilson Paul Jones Mick Jagger Alanis Morissette Ozzy Osbourne Jon Bon Jovi Reverend Gary Davis Pepa Nos Harel Moyal Otis Taylor Lenny Kravitz Blind Willie McTell Rod Stewart Steven Tyler Joe Satriani Brian Jones Ian Gillan Kris Kristofferson Carrie Underwood John Entwistle Jeff Buckley Bryan Ferry Garth Brooks Kenny Rogers Muddy Waters Brian Molko Nina Persson June Carter Cash Big Mama Thornton Jay Chou Billy Branch Wang Leehom Johnny Neel Sophie Hunger Keren Ann Chris Rea Louisiana Red Chris Cornell Rob Halford Crystal Bowersox Van Morrison Jill Johnson Susan Tedeschi Hiroto Kōmoto George Thorogood Billy Connolly Hyde Lemmy James Taylor Bobby Darin Roger Daltrey Pete Doherty Robby Krieger Captain Beefheart Per Gessle Boy George Tricky Jack Bruce Peter Green Jónsi John Mayall Taylor Hicks Donovan Clint Black John Flansburgh Hammie Nixon Billy Boy Arnold Doctor Ross Driftin' Slim Juke Boy Bonner Jazz Gillum Alice Cooper Anssi Kela Johnny Winter Abu Talib Greg Lake Adam Gussow Julian Casablancas Willie Mabon Bob Dylan Stevie Wonder John Lennon Bruce Springsteen Bruce Willis Woody Guthrie Dan Ar Braz Beck Marcus Mumford Shakira Johnny Cash Jim Morrison Howlin' Wolf Robbie Williams Jane Zhang John Kay Taj Mahal Levon Helm Graham Nash Mick Jones Ray Davies Leon Redbone Tim Kaine Leo Sayer Toots Thielemans Alain Bashung Little Walter Hasil Adkins Robert Plant Denny Laine Jimmy Reed Kenny Loggins Reb Beach Ryan Adams Kenny Baker Sonny Boy Williamson II Willy DeVille Jason Ricci Lester Butler Larry Adler Norton Buffalo Rod Piazza George Smith Jerry McCain Duster Bennett Delbert McClinton Doc Watson Ismaël Lô Gene Clark Glenn Frey Bryan Adams Sting Bob Weston Serj Tankian Dave Gahan Robert Smith Huey Lewis Steve Marriott Chris Jones Tommy Reilly Shannon Hoon Serena Ryder Bobby Bland Boris Grebenshchikov Annie Raines Junior Wells Bertrand Cantat Paul Carrack Micky Hank Williams Jr. Bo Bice Rick Davies Cyril Davies Gary Primich Simple Kid Charles Pasi Willie Cobbs Alex Lee Sébastien Charlier Willie "Big Eyes" Smith Lee Oskar Ciarán Bourke Bad News Brown Kany García Arno Ramblin' Jack Elliott Robert Nighthawk Roger Troutman Sam Chatmon Billie Joe Armstrong Chris Martin Wu Qing-feng Bob Young Alan Wilson Ray LaMontagne Roger Chapman Tadeusz Nalepa Sam Myers Slim Harpo James Cotton León Gieco Louis Myers Jean-Jacques Milteau Joe Hill Louis Edoardo Bennato Luther Allison Sonny Terry Burton Cummings Bernard Fanning Bono Grandpa Elliott Takuro Yoshida Big Daddy Kinsey Big John Wrencher Big Walter Horton Trip Tucker Billy Lee Riley Bob Hite Carlos del Junco Keith Relf Sonny Boy Williamson I Paul Butterfield Son of Dave Pete Yorn D'banj Jandek Joe Jackson John Sebastian James McMurtry Jerry Jeff Walker Buster Brown Butch Hancock Carey Bell Danny Jones Charlie Musselwhite Hironobu Kageyama Chris Robinson Clarence "Gatemouth" Brown Jaybird Coleman Corky Siegel Curtis Salgado Eddie "Guitar" Burns DeFord Bailey Mickey Raphael Johnny Mars Dougie MacLean John Popper Sugar Ray Norcia Eddie Mapp Eddie Shu Snooky Pryor Tamás Somló László Tolcsvay Jacques Higelin Noah Lewis Keb' Mo' Jimmy Rogers J. B. Lenoir Lowell George Olu Dara Tom Cochrane Ronald Jenkees John P. Hammond Robert Hunter Jesse Fuller Michael Monroe Junior Parker Ray Thomas Frank Frost Frank Hutchison Larry Knechtel Paul deLay Sväng Gene Parsons George "Mojo" Buford Shakey Jake Harris Gwen Foster Harmonica Frank Harry Chapin Victoria Williams Houston Stackhouse Howard Levy Magic Dick Irwin Goodman Jeff Carson Jerry Portnoy John Brim John Callahan Matthew Skoller Karen Mantler Taylor Nichols Ray Collins Frida Öhrn Lazy Lester Lee McBee Lester Davenport Lew Lewis Little Johnny Jones Little Mack Simmons Lonnie Glosson Mark Hummel Will Tura Christopher Wolstenholme Ryszard Riedel Marc Broussard Paul Lamb Paul Oscher Raful Neal Spencer Davis Richard Oesterreicher Ron "Pigpen" McKernan Russell Javors Jerry Adler Michael Logen Willie P. Bennett Ricky Wilson Javier Krahe Sugar Blue Vladimir Kuzmin Olivier Ker Ourio Sanna Nielsen Peg Leg Sam Tony Glover Hugh McCracken Max Geldray Watermelon Slim Les Stroud Will Shade William Clarke Charlie McCoy Alan Glen Hessel van der Kooij Zé Ramalho Alain Lamontagne Albert Raisner Amy Ray Bonny B. Alan Merrill Charlie Sayles Charlélie Couture Chris Jagger Daddy Stovepipe Syl Johnson Felipe Saldivia Freddy Della Greg Szlapczynski Grégoire Maret Guy Bélanger Hugh Coltman Jean-Louis Emmenecker Jim King Jay Summerour La Bolduc Marie Courcelle Mathieu Péquériau Matthew Kelly Olivier Poumay Patrick Esposito Di Napoli Peter Case Roll Pignault Rob Paparozzi Tao Rodríguez-Seeger Tony Nyadundo Trampled by Turtles Andy J. Forest Carlo Zannetti Dani Litani Pelle Miljoona Fabio Treves Gunnar Graps Maury Muehleisen Peter Hayes Stefano D'Orazio Basta Richard Shaw Brown Timur Vedernikov Gennady Vetrov Vadim Kurilev Róbert Semënovič Lénc Maxim Leonidov Vyacheslav Malezhik Alexey Romanov Aleksándr Stepánovič Stepanénko Jai Uttal Louise Hoffsten Sergey Chigrakov Vladimir Shakhrin Adrian Ivanițchi Sigmund Groven Alex DeLaszlo Andy Santana Arthur Tolcher B. F. Shelton Back Alley John Blind Mississippi Morris Blues Boy Willie Bob Baldori Bob Cranford Bob Lanois Bobby Clancy Jenny Almsenius Py Bäckman Gunhild Carling Boo Boo Davis Brian Greenway Buddy Greene Buzz Kilman Carlos López Puccio Catriona Sturton Charles Leighton Chicago Bob Nelson Chris Janson Chris Michalek Chuck Jackson Clara Sherman Crystal Taliefero Danny Faragher Darrell Mansfield Dave Gage Dean Friedman Don Frank Brooks Eddie Burks Edu da Gaita Elder Roma Wilson Farryl Purkiss Fereydoon Forooghi Filip Jers Flávio Guimarães Freddie Brooks Frédéric Yonnet Gene Cornish Gene Kelton George Butler Gerry Hundt Golden "Big" Wheeler Good Rockin' Charles Greedy Smith Greg "Fingers" Taylor Guido Basso Hal Goldstein Hans Olson Heidi Newfield Laura Jane Grace Fernando Lobo de Dueñas Franco Luciani Horrie Dargie Humberto Clayber Peter Ivers Francisco Bello-Morales Riedel Jaakko Löytty James Harman James Montgomery Jawbone Wicho García Jerron "Blind Boy" Paxton Jim Murray Jimmy Zavala Joe Filisko Joel Tepp John "Juke" Logan Johnny "Yard Dog" Jones Johnny Drummer Johnny Dyer Junior Samples Visitante Keith Dunn Kevin Collins Kieran White Kristin Andreassen L.P. Laurie Geltman Lester Chambers Lil' Rev Little Arthur Duncan Little Hatch Little Sammy Davis Little Sonny Avi Matos Lynwood Slim Marc Scibilia Marcel Marcus Hummon Mark Cole Mark Feltham Mel Lyman Middle Walter Mikael Santana Mike Morgan Mike Stevens Moses "Whispering" Smith Namoli Brennet Nat Riddles Nathan Stickman Neal Pattman Nick Moss Nicky Shane Norma Tanega Shay Tochner Papa Lightfoot Pat Bergeson Patrick Clancy Paul Reddick Paulo Miklos Pawlu Camilleri Pete Gage Peter Harper Phil Alvin Quique González Rachel Trachtenburg Ray Bonneville Ray Jackson Ricky Lynn Gregg Ron Kavana Ruth Ungar Salty Holmes Sam Frazier Jr. Sam Hinton Schoolboy Cleve Scott Billington Shorty Medlocke Stan Harper Steve Nardella Studebaker John Terry McMillan The Twisters Tollak Ollestad Tony Bove Tris Imboden Walter Daniels Washboard Willie Rodrigo González William Galison Ryszard Skibiński Sławomir Wierzcholski Milton Guedes Ricardo Graça Mello Richard Hayman Kōsetsu Minami Kazuhiko Matsuo Koichi Matsuda Ireneusz Dudek Jan Skrzek Maciej Balcar Michał Kielak Philip Achille Memphis Willie B. Pepe Ahlqvist Tauno Krossi Petr Kocman J.D. Short Rasmus Kern Idan Amedi Justin Rutledge Giota Gianna Pauli Hanhiniemi Evgeny Margulis Roman Voloznev Harmonica Shah Dave Peabody Johnny Woods Johnny Nicholas J. D. Wilkes Eron Falbo John Witmer Benny Gallagher Jon Gindick Steve Guyger Bebe Rexha Houston Scott Guy Forsyth John Németh Jim Conway Si Genaro David Barrett Rick Epping Steve Marriner Bishop Dready Manning Kyle Wooten Rick Estrin & The Nightcats James Conway Jean-Michel Poisson Brendan Power Shmuel Gogol Panam Percy Paul Willie Watson Nicu Vladimir Bradley Lone Judd Lander Milan Kamnik Harpdog Brown Bob Corritore Little Willy Foster Sidney Maiden Terry "Harmonica" Bean John Sebastian Mick Kinsella Frank Maher Grady Champion Yvonnick Prene Steven De bruyn Woodrow Adams Eddy Manson Alberto Magnaghi Johnny Sansone L. C. Ulmer Big Dave McLean Hamilton Loomis R.J. Mischo Joe Bidewell Luke Spiller Dennis Gruenling Pierre Lacocque Tommy Morgan Myke Scavone Earring George Mayweather Chyna Parks Harmonica Fats Palmer McAbee Andy Rodgers Travis Leonard Blaylock Sara Curruchich Bogus Ben Covington Starfire on the Mountain Don Audet Martijn Luttmer Marius Mensink Konstantin Kolesnichenko Emiel De Meyer Raúl Ybarnegaray Paul Williams (British singer) Hanna Nicole César Castrillón Maria Matzerath Tom Ball Mikey McKieran Seamus Fogarty Indiara Sfair Alfonso Figueroa David Gregor Beck Hansen Byung-Ran Lee Glen Turner Soldo Dino MacDonald Aaron Sal Bernardi Kalet Joseph Darvill Ben Russel Dane Paul Tuco Marcondes Dr. Ross Marco Zappa Jochen Wenz Ewan Shiels James Thompson Tommy "Pipes" Mcdonnell Dennis McCall Moses Smith Brody Buster Seiji Uguchi Part. Brody Buster Nick Payn Whispering Smith Jeff Espinoza Ben Miller Paul-André Thibert Bob Stannard Tetsuya Nakamura Glen Clark Boubacar Sidibe Maurice Einhorn Frank Mead Rocky Kramer Yves Lambert Paolo Demontis Miloslav Totter Dash Cooper Kiko (singer) Zennic