Assertion: monarch's population | /r/CapableOf | fall by possibly 90 percent
Facets:
value: during the last two decades
type: TEMPORAL
Source sentences:
text: Monarch butterflies are threatened and being considered for protection under The U.S. Endangered Species Act (monarch populations have fallen by possibly 90 percent during the last two decades).
text: Monarch butterflies are threatened and being considered for protection under The U.S. Endangered Species Act (monarch populations have fallen by possibly 90 percent during the last two decades).