Question: Was Keith Richards (the one that is famous for reggae) not born in 1917?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: reggae
function: Relate
dependencies: 0
inputs: famous people
forward
function: Find
inputs: Keith Richards
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1917
!=
SPARQL: ASK { ?e <pred:name> "Keith Richards" . ?e_1 <famous_people> ?e . ?e_1 <pred:name> "reggae" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1917 ) .  }
Answer: yes