Question: Which person has the Twitter username of LeDoctor?
Choices: Anil Kapoor
Max Fleischer
William Henry Harrison
Frank Marshall
Sylvester Stallone
Richard Gere
Jeff Daniels
Jon Favreau
Jean Passanante
Virginia Woolf
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "LeDoctor" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
LeDoctor
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Frank Marshall