Assertion: harrier's number | /r/CapableOf | show considerable decline
Facets:
value: over the past couple of years
type: TEMPORAL
Source sentences:
text: Its numbers have shown considerable decline over the past couple of years, although the International Union for the Conservation of Nature has classified them as animals of "Least Concern", owing to the fact that the decline did not go over the 30% threshold in the last ten years leading up to the classification.