Question: What is the Twitter username of the person who is an employee of Georgetown University Law Center?
Choices:
chelseafc
davidakaye
ericburdon
Microsoft
islamicmoqawama
Bethesda_jpn
VeraFarmiga
universityofri
Mattel
QMUL
Answer: davidakaye
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <employer> ?e_1 . ?e_1 <pred:name> "Georgetown University Law Center" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Georgetown University Law Center
function: Relate
dependencies: 0
inputs: employer
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: Twitter username