Question: Is Viking metal's inception time in 1980?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Viking metal" . ?e <inception> ?pv . ?pv <pred:year> 1980 .  }
Program:
function: Find
inputs: Viking metal
function: QueryAttr
dependencies: 0
inputs: inception
function: VerifyYear
dependencies: 1
inputs: 1980
=
Answer: yes