Question: Does the short film directed by Orson Welles have a publication date before 2015?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "short film" . ?e <director> ?e_1 . ?e_1 <pred:name> "Orson Welles" .  ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 2015 ) .  }
Program:
function: Find
inputs: Orson Welles
function: Relate
dependencies: 0
inputs: director
backward
function: FilterConcept
dependencies: 1
inputs: short film
function: QueryAttr
dependencies: 2
inputs: publication date
function: VerifyYear
dependencies: 3
inputs: 2015
<
Answer: yes