Question: When was the mechanical wave designated by IAB code 344 first established?
Choices: 1793-01-01
1200
1085
1861-01-29
1900-01-01
1950-03-01
1838
1636
1640
1918-12-01
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "mechanical wave" . ?e <IAB_code> ?pv_1 . ?pv_1 <pred:value> "344" . ?e <inception> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: IAB code
344
function: FilterConcept
dependencies: 1
inputs: mechanical wave
function: QueryAttr
dependencies: 2
inputs: inception
Answer: 1900-01-01