Assertion: killer whale | /r/HasProperty | marine mammals
Facets:
Source sentences:
text: Killer whales, also known as Orcas, are marine mammals.
text: It is a marine mammal.
text: 3) Because the killer whale is a marine mammal it is warm-blooded, produces milk, give birth to its young and requires air to breathe.
text: Killer whales are marine mammals belonging to the family Delphinidae, formed by several species of dolphins, false killer whales and pilot whales.