Assertion: adult polar bear | /r/HasProperty | vulnerable
Facets:
value: to predation
type: CAUSE
value: occasionally
type: DEGREE
value: by orcas
type: OTHER
Source sentences:
text: Adult polar bears are occasionally vulnerable to predation by orcas (Orcinus orca) while swimming, but they are rarely reported as taken and bears are likely to avoid entering the water if possible if they detect an orca pod in the area.