Question: Was the mechanical wave genre exemplified by Emmylou Harris invented sometime other than 1873?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "mechanical wave" . ?e_1 <genre> ?e . ?e_1 <pred:name> "Emmylou Harris" .  ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1873 ) .  }
Program:
function: Find
inputs: Emmylou Harris
function: Relate
dependencies: 0
inputs: genre
forward
function: FilterConcept
dependencies: 1
inputs: mechanical wave
function: QueryAttr
dependencies: 2
inputs: inception
function: VerifyYear
dependencies: 3
inputs: 1873
!=
Answer: yes