Assertion: whisper | /r/HasProperty | sound
Facets:
Source sentences:
text: A whisper is a sound produced by whispering.
text: In this case, when a visitor stands at one focus and whispers, the line of sound emanating from this focus reflects directly to the focus at the other end of the gallery, where the whispers may be heard.
text: A whisper is a sound produced by whispering.