Assertion: dolphin | /r/CapableOf | make whistle
Facets:
value: for communication
type: PURPOSE
Source sentences:
text: Dolphins can make squeaks, buzzes, whistles, clicks, and a wide array of other crazy noises..
text: A dolphin can produce whistles for communication and clicks for sonar at the same time, which would be like a human speaking in two voices, with two different pitches, holding two different conversations.