Question: What is the Twitter handle of the German rock band?
Choices:
BillyIdol
bnei876
VicUniWgtn
AlisonKrauss
scorpions
kcandsunshineb
janisjoplin
SamVincent71
MarkKnopfler
CityofAmarillo
Answer: scorpions
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "rock band" . ?e <country> ?e_1 . ?e_1 <pred:name> "Germany" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Germany
function: Relate
dependencies: 0
inputs: country
backward
function: FilterConcept
dependencies: 1
inputs: rock band
function: QueryAttr
dependencies: 2
inputs: Twitter username