Question: Who is the sibling of the director of Prometheus?
Choices: Walter Pidgeon
Shashi Kapoor
La Toya Jackson
Casey Affleck
Gale Anne Hurd
Tony Scott
Shammi Kapoor
Damon Wayans
Richard M. Sherman
Alice
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <sibling> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "human" . ?e_2 <director> ?e_1 . ?e_2 <pred:name> "Prometheus" .   }
Program:
function: Find
inputs: Prometheus
function: Relate
dependencies: 0
inputs: director
forward
function: FilterConcept
dependencies: 1
inputs: human
function: Relate
dependencies: 2
inputs: sibling
backward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Tony Scott