Question: Which person's Twitter username is aplusk?
Choices: Sylvester Stallone
Céline Dion
Ray Bradbury
Max Fleischer
Joan Baez
Richard Gere
Juliette Binoche
Ashton Kutcher
Michael Shannon
David Byrne
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "aplusk" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
aplusk
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Ashton Kutcher