Assertion: brown bear's population | /r/HasProperty | declined by as much as 49%
Facets:
value: over the past 30 years
type: TEMPORAL
Source sentences:
text: It is thought that populations could have declined by as much as 49% over the past 30 years alone and although no official estimates have been produced, it is widely believed that there are fewer than 50,000 left in the wild today.