Question: Which person heads Canada's government?
Choices: David Hume
Max Fleischer
Sylvester Stallone
Barack Obama
Tom McCarthy
Stephen Harper
Angel
Jimmy Carter
Richard Gere
Gerald Ford
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <head_of_government> ?e . ?e_1 <pred:name> "Canada" .   }
Program:
function: Find
inputs: Canada
function: Relate
dependencies: 0
inputs: head of government
forward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Stephen Harper