Question: Was the person buried in Kent (the one that contains River Thames) born before 1968?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <place_of_burial> ?e_1 . ?e_1 <pred:name> "Kent" . ?e_2 <located_in_the_administrative_territorial_entity> ?e_1 . ?e_2 <pred:name> "River Thames" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1968 ) .  }
Program:
function: Find
inputs: River Thames
function: Relate
dependencies: 0
inputs: located in the administrative territorial entity
forward
function: Find
inputs: Kent
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: place of burial
backward
function: FilterConcept
dependencies: 4
inputs: human
function: QueryAttr
dependencies: 5
inputs: date of birth
function: VerifyYear
dependencies: 6
inputs: 1968
<
Answer: yes