Question: What big city has a Twitter username of Stadt_Darmstadt?
Choices: Makati
Dnipro
Dijon
Lyon
Halle (Saale)
Darmstadt
Utrecht
The Hague
Toulouse
Freiburg im Breisgau
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "big city" . ?e <Twitter_username> ?pv . ?pv <pred:value> "Stadt_Darmstadt" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
Stadt_Darmstadt
function: FilterConcept
dependencies: 1
inputs: big city
function: What
dependencies: 2
Answer: Darmstadt