Question: Who is the person whose Twitter username is charlie_adler?
Choices: Max Fleischer
James Blunt
Sylvester Stallone
Alec Baldwin
William Henry Harrison
Karl Popper
Barbra Streisand
Matt LeBlanc
Charlie Adler
Robert Guillaume
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "charlie_adler" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
charlie_adler
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Charlie Adler