Question: Is 1985-01-01 the beginning date of the alternative metal whose famous person is Les Claypool?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: Les Claypool
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: alternative metal
function: QueryAttr
dependencies: 2
inputs: inception
function: VerifyDate
dependencies: 3
inputs: 1985-01-01
=
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "alternative metal" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Les Claypool" .  ?e <inception> ?pv . ?pv <pred:date> "1985-01-01"^^xsd:date .  }
Answer: yes