Question: Which actor directed The Aristocrats?
Choices:
William Henry Harrison
Penn Jillette
Bob Fosse
John Denver
Charlie Chaplin
Sylvester Stallone
Richard Gere
Jodie Foster
Max Fleischer
Ben Gazzara
Program:
function: Find
inputs: actor
function: Relate
dependencies: 0
inputs: occupation
backward
function: FilterConcept
dependencies: 1
inputs: human
function: Find
inputs: The Aristocrats
function: Relate
dependencies: 3
inputs: director
forward
function: FilterConcept
dependencies: 4
inputs: human
function: And
dependencies: 2
5
function: What
dependencies: 6
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <occupation> ?e_1 . ?e_1 <pred:name> "actor" .  ?e_2 <director> ?e . ?e_2 <pred:name> "The Aristocrats" .  }
Answer: Penn Jillette