Question: Was the release date other than 1983 for Nelson, whose main topic is the Napoleonic Wars?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Nelson" . ?e <main_subject> ?e_1 . ?e_1 <pred:name> "Napoleonic Wars" .  ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1983 ) .  }
Program:
function: Find
inputs: Napoleonic Wars
function: Relate
dependencies: 0
inputs: main subject
backward
function: Find
inputs: Nelson
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date
function: VerifyYear
dependencies: 4
inputs: 1983
!=
Answer: yes