Assertion: whistle | /r/HasProperty | clean
Facets:
value: very
type: DEGREE
value: in order to emit the pure notes
type: PURPOSE
value: absolutely
type: DEGREE
Source sentences:
text: In order to emit the pure notes intended by its maker, a whistle has to be absolutely clean.
text: Although it requires a gentle breath in the lowest notes, the whistle is very clean playing and consistent throughout its range, so it will reward very quickly, the practice needed for a beginner to master its playing characteristics.