Question: Who is the person whose Twitter username is ladygaga?
Choices: Max Fleischer
Will Smith
William Henry Harrison
Garry Shandling
William Morris
Lady Gaga
Imogen Heap
Richard Gere
Sarah Polley
Sylvester Stallone
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "ladygaga" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
ladygaga
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Lady Gaga