Assertion: vulture's population | /r/CapableOf | halve since late 1990s
Facets:
value: every other year
type: TEMPORAL
value: essentially
type: DEGREE
Source sentences:
text: The population of this species has essentially halved every other year since the late 1990s, and what once was a plentiful species numbering in the hundreds of thousands has come dangerously close to extinction in a mere decade-and-a-half or so.