Question: How many mechanical waves have an inception time that is not 1979?
Choices: 140
141
142
143
144
145
146
147
148
149
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "mechanical wave" . ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1979 ) .  }
Program:
function: FindAll
function: FilterYear
dependencies: 0
inputs: inception
1979
!=
function: FilterConcept
dependencies: 1
inputs: mechanical wave
function: Count
dependencies: 2
Answer: 146