Question: Was John Williams (the one that died in La Jolla) born on 1903-04-15?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:name> "John Williams" . ?e <place_of_death> ?e_1 . ?e_1 <pred:name> "La Jolla" .  ?e <date_of_birth> ?pv . ?pv <pred:date> "1903-04-15"^^xsd:date .  }
Program:
function: Find
inputs: La Jolla
function: Relate
dependencies: 0
inputs: place of death
backward
function: Find
inputs: John Williams
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyDate
dependencies: 4
inputs: 1903-04-15
=