Question: Did cricket's John Williams die prior to 2012 ?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "John Williams" . ?e <sport> ?e_1 . ?e_1 <pred:name> "cricket" .  ?e <date_of_death> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 2012 ) .  }
Program:
function: Find
inputs: cricket
function: Relate
dependencies: 0
inputs: sport
backward
function: Find
inputs: John Williams
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of death
function: VerifyYear
dependencies: 4
inputs: 2012
<
Answer: yes