Question: Which person is Ben Affleck's sibling?
Choices:
Casey Affleck
Bob Roberts
Max Fleischer
Emilio Estevez
Alexandre Dumas
William Henry Harrison
Jessica Tandy
Richard Gere
Sylvester Stallone
Damon Wayans
Program:
function: Find
inputs: Ben Affleck
function: Relate
dependencies: 0
inputs: sibling
backward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <sibling> ?e_1 . ?e_1 <pred:name> "Ben Affleck" .   }
Answer: Casey Affleck