Assertion: dolphin's signature whistle | /r/HasProperty | unique
Facets:
value: like a name
type: OTHER
Source sentences:
text: Bottlenose dolphins also have unique signature whistles which are believed to help each dolphin distinguish who happens to be around at any given time.
text: Some species have a signature whistle, which, like a name, is a unique sound that allows other dolphins to identify it.
text: Every dolphin has a unique signature whistle that identifies them, just like your name!