Assertion: clarinet's instrument | /r/HasProperty | invented
Facets:
value: during the 1970s
type: TEMPORAL
Source sentences:
text: The instrument used by Stadler was invented and built by the Vienna K.K. court instrument maker Theodor Lotz around 1788.
text: The Hawaiian instrument, called a xaphoon, was invented during the 1970s and is also marketed as a "bamboo sax", although its cylindrical bore more closely resembles that of a clarinet, and its lack of any keywork makes it more akin to a recorder.