Question: What is the Twitter username of the American football team whose member player William Powell is a running back?
Choices:
katebushmusic
elizadushku
livifcofficial
IAMQUEENLATIFAH
pmharper
hsv
MontpellierHSC
officialOAFC
JohnLeguizamo
AZCardinals
Answer: AZCardinals
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "American football team" . ?e_1 <member_of_sports_team> ?e . ?e_1 <pred:name> "William Powell" . ?e_1 <position_played_on_team_/_speciality> ?e_2 . ?e_2 <pred:name> "running back" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: running back
function: Relate
dependencies: 0
inputs: position played on team / speciality
backward
function: Find
inputs: William Powell
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: member of sports team
forward
function: FilterConcept
dependencies: 4
inputs: American football team
function: QueryAttr
dependencies: 5
inputs: Twitter username