Question: What is the Twitter username of the person who won the Grammy Award for Album of the Year (that concerns the award-winning work 21)?
Choices: RyanTedder
JENCOOLIDGE
MichaelRapaport
White_Willy31
cosagov
yokoono
ProfBrianCox
TheSlyStallone
stockportcounty
DaveChappelle
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <award_received> ?e_1 . ?e_1 <pred:name> "Grammy Award for Album of the Year" .  [ <pred:fact_h> ?e ; <pred:fact_r> <award_received> ; <pred:fact_t> ?e_1 ] <for_work> ?qpv . ?qpv <pred:value> "21" . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Grammy Award for Album of the Year
function: Relate
dependencies: 0
inputs: award received
backward
function: QFilterStr
dependencies: 1
inputs: for work
21
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: Twitter username
Answer: RyanTedder