Question: Regarding John Logan (who died in Frankfort), did he or she die not in 1754?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:name> "John Logan" . ?e <place_of_death> ?e_1 . ?e_1 <pred:name> "Frankfort" .  ?e <date_of_death> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1754 ) .  }
Program:
function: Find
inputs: Frankfort
function: Relate
dependencies: 0
inputs: place of death
backward
function: Find
inputs: John Logan
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of death
function: VerifyYear
dependencies: 4
inputs: 1754
!=