Question: Who plays multiple instruments?
Choices:
William Henry Harrison
David McCallum
George Gershwin
Sylvester Stallone
Michael Pitt
Johnny Depp
Yann Tiersen
Max Fleischer
Lewis Gilbert
Steve Zahn
Answer: Yann Tiersen
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <instrument> ?e_1 . ?e_1 <pred:name> "multi-instrumentalist" .   }
Program:
function: Find
inputs: multi-instrumentalist
function: Relate
dependencies: 0
inputs: instrument
backward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2