Question: What is the publication date for the visual artwork produced by Burt Lancaster?
Choices:
1994-09-01
1998-01-02
1992-08-03
1954-01-01
2006-10-05
2008-06-13
2016-03-11
1986-08-02
2001-05-17
2001-01-18
Program:
function: Find
inputs: Burt Lancaster
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: QueryAttr
dependencies: 2
inputs: publication date
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <producer> ?e_1 . ?e_1 <pred:name> "Burt Lancaster" .  ?e <publication_date> ?pv .  }
Answer: 1954-01-01