Question: What is the date of birth of the father of Christopher Wren, who died 1723-03-08?
Choices:
1989-08-02
1988-12-19
1967-06-20
1973-04-14
1589-09-17
1972-07-01
1958-10-19
1951-01-12
1938-05-24
-284
Answer: 1589-09-17
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <father> ?e . ?e_1 <pred:name> "Christopher Wren" . ?e_1 <date_of_death> ?pv_1 . ?pv_1 <pred:date> "1723-03-08"^^xsd:date . ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: Christopher Wren
function: FilterDate
dependencies: 0
inputs: date of death
1723-03-08
=
function: Relate
dependencies: 1
inputs: father
forward
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: date of birth