Question: What is its publication date? For the visual artwork whose producer is Andy Lau.
Choices: 1986-08-21
1961-04-27
2012-06-21
1997-02-21
1998-12-18
2010-04-08
2016
1982-12-18
2010-06-01
2001-05-11
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <producer> ?e_1 . ?e_1 <pred:name> "Andy Lau" .  ?e <publication_date> ?pv .  }
Program:
function: Find
inputs: Andy Lau
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: QueryAttr
dependencies: 2
inputs: publication date
Answer: 2016