Assertion: dugong's calf | /r/CapableOf | remain under the care of its mother
Facets:
value: after a year-long gestation
type: TEMPORAL
value: until sexual maturity
type: TEMPORAL
Source sentences:
text: After a year-long gestation, a dugong calf remains under the care of its mother until sexual maturity, which can occur as late as 18 years.