Assertion: humpback whale's calf | /r/HasProperty | 20 feet long
Facets:
value: at birth
type: TEMPORAL
Source sentences:
text: At birth, calves are about 20 feet long and weigh 2 short tons (most cars weigh about 1/2 ton).
text: At birth, calves are about 20 feet long and weigh 2 short tons (most cars weigh about 1/2 ton).