Question: Which person's Twitter username is joshgroban?
Choices: Gary Rydstrom
Sylvester Stallone
Jada Pinkett Smith
Josh Groban
Anthony Hopkins
John Cusack
William Henry Harrison
Gloria Stuart
Josh Lucas
Max Fleischer
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv . ?pv <pred:value> "joshgroban" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
joshgroban
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
Answer: Josh Groban