Question: What person's Twitter username is WmPowell2016?
Choices: Israel
Max Fleischer
Sylvester Stallone
Richard Gere
David Kaye
Bing Crosby
William Henry Harrison
William Powell
Chazz Palminteri
Edward G. Boyle
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "WmPowell2016" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
WmPowell2016
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: William Powell