Question: Where was the film that featured Klaus Voormann on its cast published on 1981-12-17?
Choices: Berlin
Turkey
Italy
Denmark
Portugal
Bahrain
Iceland
European Union
Germany
Norway
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "feature film" . ?e <cast_member> ?e_1 . ?e_1 <pred:name> "Klaus Voormann" .  ?e <publication_date> ?pv . ?pv <pred:date> "1981-12-17"^^xsd:date . [ <pred:fact_h> ?e ; <pred:fact_r> <publication_date> ; <pred:fact_t> ?pv ] <place_of_publication> ?qpv .  }
Program:
function: Find
inputs: Klaus Voormann
function: Relate
dependencies: 0
inputs: cast member
backward
function: FilterConcept
dependencies: 1
inputs: feature film
function: QueryAttrQualifier
dependencies: 2
inputs: publication date
1981-12-17
place of publication
Answer: Germany