Question: Who is Douglas Fairbanks' spouse?
Choices: Richard Gere
Mary Pickford
David Benioff
Sylvester Stallone
Tim Armstrong
Jane Espenson
Paul Newman
William Henry Harrison
David Mamet
Chet Atkins
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <spouse> ?e_1 . ?e_1 <pred:name> "Douglas Fairbanks" .   }
Program:
function: Find
inputs: Douglas Fairbanks
function: Relate
dependencies: 0
inputs: spouse
backward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Mary Pickford