Question: What is the publication date of an album that serves as the basis for Tommy (the one whose release region is Canada) ?
Choices: 2012-01-20
1943-01-01
1986-03-13
1969-05-23
2018-02-23
2002-06-21
1968-07-26
2018-11-23
2011-12-23
2006-05-26
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "album" . ?e_1 <based_on> ?e . ?e_1 <pred:name> "Tommy" . ?e_1 <film_release_region> ?e_2 . ?e_2 <pred:name> "Canada" .  ?e <publication_date> ?pv .  }
Program:
function: Find
inputs: Canada
function: Relate
dependencies: 0
inputs: film release region
backward
function: Find
inputs: Tommy
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: based on
forward
function: FilterConcept
dependencies: 4
inputs: album
function: QueryAttr
dependencies: 5
inputs: publication date
Answer: 1969-05-23