Assertion: orchestra's part | /r/HasProperty | interchangeable
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Trumpet and cornet parts have often been considered interchangeable and are sometimes separated into 3 or 4 cornet parts and two trumpet parts; however, this practice is no longer used and is usually only seen in older (e.g. pre-1950) works and transcriptions.