Assertion: whale's calf | /r/HasProperty | approximately 1 short ton
Facets:
value: in 4–6 m
type: OTHER
Source sentences:
text: Calves are approximately 1 short ton (0.91 t; 0.89 long tons) in weight and 4–6 m (13–20 ft) in length at birth following a gestation period of 1 year.