Question: Is the deceased date for someone born on 1932-06-23 earlier than 1991 ?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <date_of_birth> ?pv_1 . ?pv_1 <pred:date> "1932-06-23"^^xsd:date . ?e <date_of_death> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1991 ) .  }
Program:
function: FindAll
function: FilterDate
dependencies: 0
inputs: date of birth
1932-06-23
=
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: date of death
function: VerifyYear
dependencies: 3
inputs: 1991
<
Answer: yes