Question: What is the Twitter username for David Arquette's spouse?
Choices:
BarackObama
randytravis
SportCharleroi
spdde
CourteneyCox
johnlennon
landondonovan
aliciakeys
marseille
LSEnews
Answer: CourteneyCox
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "David Arquette" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: David Arquette
function: Relate
dependencies: 0
inputs: spouse
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: Twitter username