Assertion: killer whale's family | /r/HasProperty | oceanic dolphins
Facets:
Source sentences:
text: Dolphin, any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) as well as the families Platanistidae and Iniidae, the two that contain the river dolphins.
text: They are members of the order Cetacea, of which there are four families, the oceanic dolphins (Delphinidae), Indian river dolphins (Platanistidae), the new world river dolphins (Iniidae), and the brackish dolphins (Pontoporiidae).