Question: Was the short film written by D. W. Griffith published after 1877?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "short film" . ?e <screenwriter> ?e_1 . ?e_1 <pred:name> "D. W. Griffith" .  ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v > 1877 ) .  }
Program:
function: Find
inputs: D. W. Griffith
function: Relate
dependencies: 0
inputs: screenwriter
backward
function: FilterConcept
dependencies: 1
inputs: short film
function: QueryAttr
dependencies: 2
inputs: publication date
function: VerifyYear
dependencies: 3
inputs: 1877
>
Answer: yes