Assertion: contralto's voice | /r/HasProperty | individual
Facets:
value: with a unique sound
type: OTHER
value: as faces
type: OTHER
Source sentences:
text: Voices are as individual as faces; some altos will have a narrower or wider range, or the sweetest and most powerful part of their range in a different place than other altos.
text: Every voice is an individual instrument with a unique sound.