Assertion: dugong's calf | /r/CapableOf | stay for two years
Facets:
value: close to the mother
type: OTHER
value: to learn travel routes
type: PURPOSE
Source sentences:
text: Female manatees usually have one calf every two to five years and the calf then stays and nurses for two years.
text: The calf will stay close to the mother for one to two years to learn travel routes and the location of food, rest areas and warm water refuges.