Question: Who is the person lives in Frankfurt?
Choices: William Henry Harrison
Nora Ephron
Sylvester Stallone
Richard Gere
Rick Rubin
Nelly
Max Fleischer
Andy Hallett
Chris Evans
Arthur Schopenhauer
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <residence> ?e_1 . ?e_1 <pred:name> "Frankfurt" .   }
Program:
function: Find
inputs: Frankfurt
function: Relate
dependencies: 0
inputs: residence
backward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Arthur Schopenhauer