Question: What is David Alan Grier's Twitter username?
Choices:
OfficialShots
AlpesMaritimes
RepAlGreen
SamVincent71
ElizabethTaylor
Avalanche
nuggets
davidalangrier
_NaomiWatts_
TheDilipKumar
Program:
function: Find
inputs: David Alan Grier
function: QueryAttr
dependencies: 0
inputs: Twitter username
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "David Alan Grier" . ?e <Twitter_username> ?pv .  }
Answer: davidalangrier