Assertion: bear's food source | /r/HasProperty | available
Facets:
value: to them
type: TRANSITIVE-OBJECT
value: during a limited period of time
type: TEMPORAL
Source sentences:
text: Grizzly bears are solitary animals, only congregating when an abundant food source is available (such as the annual salmon migration, during which large numbers of fish make their way upriver to spawn).
text: This allows them to take advantage of the various foods sources which may only be available to them during a limited period of time.