Question: What is the Twitter username of the land-grant university that John Cho attended?
Choices: tomhanks
ActuallyNPH
davidguetta
TheDemocrats
NASA
NationalGallery
CalPoly
JerrySeinfeld
UCBerkeley
afi
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "land-grant university" . ?e_1 <educated_at> ?e . ?e_1 <pred:name> "John Cho" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: John Cho
function: Relate
dependencies: 0
inputs: educated at
forward
function: FilterConcept
dependencies: 1
inputs: land-grant university
function: QueryAttr
dependencies: 2
inputs: Twitter username
Answer: UCBerkeley