Question: What is the Twitter username of the university that is the parent organization of Birkbeck, University of London?
Choices: UW
fcbaku
fedefutbolcrc
UoLondon
united
missuniverse
cecewinans
HasbroNews
nickelodeon
HatchingChange
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "university" . ?e_1 <parent_organization> ?e . ?e_1 <pred:name> "Birkbeck, University of London" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Birkbeck, University of London
function: Relate
dependencies: 0
inputs: parent organization
forward
function: FilterConcept
dependencies: 1
inputs: university
function: QueryAttr
dependencies: 2
inputs: Twitter username
Answer: UoLondon