Question: What is the date of birth of the person he became a member of the Boston United F.C. starting on 1969-01-01?
Choices:
1931-10-11
1976-07-07
1936-03-10
1965-04-04
1908-10-06
1946-01-03
1982-02-16
1958-08-22
1966-03-05
1992-03-10
Answer: 1936-03-10
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <member_of_sports_team> ?e_1 . ?e_1 <pred:name> "Boston United F.C." .  [ <pred:fact_h> ?e ; <pred:fact_r> <member_of_sports_team> ; <pred:fact_t> ?e_1 ] <start_time> ?qpv . ?qpv <pred:date> "1969-01-01"^^xsd:date . ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: Boston United F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: QFilterDate
dependencies: 1
inputs: start time
1969-01-01
=
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: date of birth