Question: Is inception time before 1950 in Delta blues?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:name> "Delta blues" . ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1950 ) .  }
Program:
function: Find
inputs: Delta blues
function: QueryAttr
dependencies: 0
inputs: inception
function: VerifyYear
dependencies: 1
inputs: 1950
<