Assertion: choir's singer | /r/HasProperty | classified by their vocal range
Facets:
value: in choir singing
type: OTHER
value: usually
type: TEMPORAL
Source sentences:
text: This is because in Choir Singing, singers are usually classified by their vocal range, and so it is more convenient to group singers based on their ranges, ie Soprano, Alto, Tenor and Bass, rather on the various characteristics of their voice, as it would be in the classical world.