Question: What is the Twitter username of the association football club that has David Healy (a member of Port Vale F.C.) as a member until is 2010-01-01?
Choices: bobmarley
seanonolennon
aliciakeys
official_ITFC
UMaine
jfa_samuraiblue
thetemptations
MClayton83NYG
dijon
david_lynch
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> "David Healy" . ?e_1 <member_of_sports_team> ?e_2 . ?e_2 <pred:name> "Port Vale F.C." .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <member_of_sports_team> ; <pred:fact_t> ?e ] <end_time> ?qpv . ?qpv <pred:date> "2010-01-01"^^xsd:date . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Port Vale F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: David Healy
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: member of sports team
forward
function: QFilterDate
dependencies: 4
inputs: end time
2010-01-01
=
function: FilterConcept
dependencies: 5
inputs: association football club
function: QueryAttr
dependencies: 6
inputs: Twitter username
Answer: official_ITFC