Assertion: penguin | /r/HasProperty | mammal
Facets:
value: commonly
type: DEGREE
Source sentences:
text: Is a penguin a bird or a mammal?
text: Commonly thought to be a mammal, the penguin is actually a flightless bird, which spends half of its life underwater and the other half on land.
text: Lots of people think penguins are mammals rather than birds because they can’t fly, and we see them swimming underwater or waddling on land instead.
text: Many people think that penguins are mammals and not birds; this is a very common misconception.
text: There are actually a number of reasons that gave power to these misconceptions about penguins being mammals.