Question: What is the date of birth for the human born in Waltham?
Choices: 1971-01-02
1946-03-07
1974-06-22
1945-03-23
1971-09-12
1979-08-20
1571-09-29
1973-04-11
1944-11-21
1972-01-01
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <place_of_birth> ?e_1 . ?e_1 <pred:name> "Waltham" .  ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: Waltham
function: Relate
dependencies: 0
inputs: place of birth
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: date of birth
Answer: 1972-01-01