Assertion: cetacean | /r/CapableOf | use moan
Facets:
Source sentences:
text: Cetaceans use sound to communicate, using groans, moans, whistles, clicks or the 'singing' of the humpback whale.
text: Cetaceans use sound to communicate, using groans, moans, whistles, clicks or the 'singing' of the humpback whale.