Question: When was born the producer of Niagara Falls (the one whose genre is romantic comedy)?
Choices: 1958-04-28
1892-01-14
1980-12-30
1954-07-18
1934-07-22
1958-07-14
1966-05-23
1972-05-25
1968-08-29
1940-04-25
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <producer> ?e . ?e_1 <pred:name> "Niagara Falls" . ?e_1 <genre> ?e_2 . ?e_2 <pred:name> "romantic comedy" .  ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: romantic comedy
function: Relate
dependencies: 0
inputs: genre
backward
function: Find
inputs: Niagara Falls
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: producer
forward
function: FilterConcept
dependencies: 4
inputs: human
function: QueryAttr
dependencies: 5
inputs: date of birth
Answer: 1892-01-14