Assertion: manatee's calf | /r/CapableOf | take further 12 to 18 months
Facets:
Source sentences:
text: Gestation lasts about 12 months and to wean the calf takes a further 12 to 18 months.
text: Gestation lasts about 12 months and to wean the calf takes a further 12 to 18 months, although females may have more than one estrous cycle per year.