Question: Was the BBC-owned TV channel established earlier than 1983?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "television channel" . ?e_1 <owner_of> ?e . ?e_1 <pred:name> "BBC" .  ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1983 ) .  }
Program:
function: Find
inputs: BBC
function: Relate
dependencies: 0
inputs: owner of
forward
function: FilterConcept
dependencies: 1
inputs: television channel
function: QueryAttr
dependencies: 2
inputs: inception
function: VerifyYear
dependencies: 3
inputs: 1983
<
Answer: no