Question: What person is a sibling of Randy Quaid?
Choices: Chad Hugo
Sylvester Stallone
Todd Haynes
Bob Weinstein
William Henry Harrison
Charles, Prince of Wales
Sophie Thompson
Dennis Quaid
Joan Cusack
Richard Gere
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <sibling> ?e_1 . ?e_1 <pred:name> "Randy Quaid" .   }
Program:
function: Find
inputs: Randy Quaid
function: Relate
dependencies: 0
inputs: sibling
backward
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Dennis Quaid