Assertion: humpback whale's mother | /r/CapableOf | keep calf
Facets:
value: in close proximity
type: LOCATION
value: to prevent them
type: PURPOSE
Source sentences:
text: Calves are capable of exploring without the aid of their mother within a few days depending on species, but whale mothers will keep the calves in close proximity to prevent them from becoming lost or risking a predatory encounter.