Question: What single has Eminem as a performer?
Choices: Barcelona
Amazing Grace
Stand by Me
Venus
Boys Don't Cry
Monster
A View to a Kill
Brave
Hello, Dolly!
Superman
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "single" . ?e <performer> ?e_1 . ?e_1 <pred:name> "Eminem" .   }
Program:
function: Find
inputs: Eminem
function: Relate
dependencies: 0
inputs: performer
backward
function: FilterConcept
dependencies: 1
inputs: single
function: What
dependencies: 2
Answer: Superman