Question: What is the start date that Jack Warner (whose date of birth is 1898) becomes a member of Watford F.C.?
Choices: 1972-05-01
1996
2016-06-21
1625
1944-07-27
1926-01-01
1972-09-11
1920-01-01
1976-02-04
1516-01-23
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Jack Warner" . ?e_1 <date_of_birth> ?pv . ?pv <pred:year> 1898 . ?e_2 <pred:name> "Watford F.C." . ?e_1 <member_of_sports_team> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <member_of_sports_team> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Jack Warner
function: FilterYear
dependencies: 0
inputs: date of birth
1898
=
function: Find
inputs: Watford F.C.
function: QueryRelationQualifier
dependencies: 1
2
inputs: member of sports team
start time
Answer: 1926-01-01