Question: When did Ocean Software publish Platoon?
Choices:
1988-10-27
1964-02-14
2001-11-15
1999-05-20
2001-06-22
1984-09-21
2006-12-08
1996-12-06
1987-01-01
1967-12-21
Answer: 1987-01-01
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Platoon" . ?e <publisher> ?e_1 . ?e_1 <pred:name> "Ocean Software" .  ?e <publication_date> ?pv .  }
Program:
function: Find
inputs: Ocean Software
function: Relate
dependencies: 0
inputs: publisher
backward
function: Find
inputs: Platoon
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date