Assertion: whale's calf | /r/HasProperty | born gray
Facets:
value: usually
type: DEGREE
Source sentences:
text: Calves are born gray or even brown and only fade to white as they become sexually mature around five years of age.
text: Calves are usually born grey, and by the time they are a month old, have turned dark grey or blue grey.
text: Calves are born gray, but will turn white as they mature.