Question: What is the Twitter username of Henry Winkler?
Choices:
BVB
Rangers
druidDUDE
hwinkler4real
aelfc
fluminensefc
Harvard
pamelaadlon
DianaKrall
fu_berlin
Answer: hwinkler4real
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Henry Winkler" . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Henry Winkler
function: QueryAttr
dependencies: 0
inputs: Twitter username