Question: When was r John Madden (the one that is the citizen of United States of America) born?
Choices:
1897-08-02
1987-01-24
1828-08-28
1915-12-08
1947-05-06
1936-04-10
1978-12-30
1928-02-25
1965-04-04
1957-08-18
Answer: 1936-04-10
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "John Madden" . ?e <country_of_citizenship> ?e_1 . ?e_1 <pred:name> "United States of America" .  ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: United States of America
function: Relate
dependencies: 0
inputs: country of citizenship
backward
function: Find
inputs: John Madden
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth