Question: Did George Martin who was born in New York City die before 1981?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:name> "George Martin" . ?e <place_of_birth> ?e_1 . ?e_1 <pred:name> "New York City" .  ?e <date_of_death> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1981 ) .  }
Program:
function: Find
inputs: New York City
function: Relate
dependencies: 0
inputs: place of birth
backward
function: Find
inputs: George Martin
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of death
function: VerifyYear
dependencies: 4
inputs: 1981
<