Question: Was the father of US citizen Hume Cronyn born on 1864-08-28 ?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <father> ?e . ?e_1 <pred:name> "Hume Cronyn" . ?e_1 <country_of_citizenship> ?e_2 . ?e_2 <pred:name> "United States of America" .  ?e <date_of_birth> ?pv . ?pv <pred:date> "1864-08-28"^^xsd:date .  }
Program:
function: Find
inputs: United States of America
function: Relate
dependencies: 0
inputs: country of citizenship
backward
function: Find
inputs: Hume Cronyn
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: father
forward
function: FilterConcept
dependencies: 4
inputs: human
function: QueryAttr
dependencies: 5
inputs: date of birth
function: VerifyDate
dependencies: 6
inputs: 1864-08-28
=