Question: Was Mark Williams (the one that is a member of Arbroath F.C.) not born in 1954?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Mark Williams" . ?e <member_of_sports_team> ?e_1 . ?e_1 <pred:name> "Arbroath F.C." .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1954 ) .  }
Program:
function: Find
inputs: Arbroath F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Mark Williams
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1954
!=
Answer: yes