Question: Who is Joni Mitchell's spouse?
Choices: Sylvester Stallone
Lauren Bacall
George C. Scott
Max Fleischer
Mani Ratnam
William Henry Harrison
Larry Klein
Julie Benz
Richard Gere
John Lennon
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "Joni Mitchell" .   }
Program:
function: Find
inputs: Joni Mitchell
function: Relate
dependencies: 0
inputs: spouse
forward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Larry Klein