Question: Is the Grammy Award for Best Rock Album the native label of the Grammy Award nominated to Joni Mitchell in 2007?
Choices: yes
no
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unknown
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SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "Grammy Award" . ?e_1 <nominated_for> ?e . ?e_1 <pred:name> "Joni Mitchell" .  [ <pred:fact_h> ?e_1 ; <pred:fact_r> <nominated_for> ; <pred:fact_t> ?e ] <point_in_time> ?qpv . ?qpv <pred:year> 2007 . ?e <native_label> ?pv . ?pv <pred:value> "Grammy Award for Best Rock Album" .  }
Program:
function: Find
inputs: Joni Mitchell
function: Relate
dependencies: 0
inputs: nominated for
forward
function: QFilterYear
dependencies: 1
inputs: point in time
2007
=
function: FilterConcept
dependencies: 2
inputs: Grammy Award
function: QueryAttr
dependencies: 3
inputs: native label
function: VerifyStr
dependencies: 4
inputs: Grammy Award for Best Rock Album
Answer: yes