Assertion: narwhal | /r/HasProperty | mammal
Facets:
Source sentences:
text: Narwhals are mammals, which means they give birth, and have milk for their young.
text: Narwhals are one of many mammals that are being threatened by human actions.
text: Narwhals are mammals, so they nurse their calves.
text: Narwhals, being mammals, require feeding from their mothers at birth.
text: Since narwhals are mammals, they have to come to the surface of the water to breathe.
text: Narwhals are one of many mammals that are being threatened by human actions.
text: Narwhals are one of many mammals that are being threatened by human actions.