Question: When was the John Wayne-produced visual artwork published?
Choices: 2010-08-02
1960-10-24
1985-05-24
1996-08-08
1918-01-01
2006-07-13
1990-10-08
1994-10-28
1939-01-01
1952-09-29
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <producer> ?e_1 . ?e_1 <pred:name> "John Wayne" .  ?e <publication_date> ?pv .  }
Program:
function: Find
inputs: John Wayne
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: QueryAttr
dependencies: 2
inputs: publication date
Answer: 1960-10-24