Question: Is the release date of Buffy the Vampire Slayer (that has David Boreanaz as a voice actor) no in the year 2009?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: David Boreanaz
function: Relate
dependencies: 0
inputs: voice actor
backward
function: Find
inputs: Buffy the Vampire Slayer
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date
function: VerifyYear
dependencies: 4
inputs: 2009
!=
SPARQL: ASK { ?e <pred:name> "Buffy the Vampire Slayer" . ?e <voice_actor> ?e_1 . ?e_1 <pred:name> "David Boreanaz" .  ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 2009 ) .  }
Answer: yes