Assertion: callus | /r/AtLocation | the head of the whale
Facets:
Source sentences:
text: Callosities are a characteristic feature of the Eubalaena genus of whales; because they are found on the head of the whale and appear white against the dark background of the whale's skin, they make it very easy to identify these species.
text: Callosities are a characteristic feature of the Eubalaena genus of whales; because they are found on the head of the whale and appear white against the dark background of the whale's skin, they make it very easy to identify these species.