Question: Which Twitter handle belongs to the basketball team headquartered in Oklahoma City?
Choices:
thedarknolan
clubbrugge
KingstonUni
AC_DC
VicUniWgtn
WellingtonUK
Gap_JP
FCDallas
DavidLeeRoth
okcthunder
Answer: okcthunder
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "basketball team" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Oklahoma City" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Oklahoma City
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: basketball team
function: QueryAttr
dependencies: 2
inputs: Twitter username