Assertion: grizzly bear | /r/HasProperty | separate species
Facets:
value: for many years
type: TEMPORAL
Source sentences:
text: At one time, scientists thought that brown bears and grizzly bears were separate species, but today, they are considered the same species, Ursus arctos.
text: For many years, the grizzly bear and the brown bear were considered separate species, but as scientific knowledge improved, it became clear that the grizzly bear was simply a sub-species of the brown bear established by the collapse of the Bering Straight.