Assertion: snow leopard's population | /r/CapableOf | decline by 20%
Facets:
value: in the past two decades
type: TEMPORAL
Source sentences:
text: It is estimated that their population may have declined by 20% during the last two decades.
text: The species was listed as endangered by the International Union for Conservation of Nature (IUCN) in 2008 following the release of data that showed populations declining by at least 20% in the past two decades.