Question: What is the Twitter username of the association football club that has Jonathan Walters as a member (the start time of this statement is 2001-01-01)?
Choices: tompetty
acdc
iamjamiefoxx
ladygaga
faith_no_more
toto99com
MySwitzerland_e
barnetfc
officialbwfc
kennyloggins
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e_1 <member_of_sports_team> ?e . ?e_1 <pred:name> "Jonathan Walters" .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <member_of_sports_team> ; <pred:fact_t> ?e ] <start_time> ?qpv . ?qpv <pred:date> "2001-01-01"^^xsd:date . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Jonathan Walters
function: Relate
dependencies: 0
inputs: member of sports team
forward
function: QFilterDate
dependencies: 1
inputs: start time
2001-01-01
=
function: FilterConcept
dependencies: 2
inputs: association football club
function: QueryAttr
dependencies: 3
inputs: Twitter username
Answer: officialbwfc