Assertion: tern's number | /r/CapableOf | decline by 98%
Facets:
value: during that time
type: TEMPORAL
Source sentences:
text: Populations of Gull-billed Tern appear erratic, but overall were stable between 1966 and 2014 - with the exception of California, where numbers declined by 98% during that time - according to the North American Breeding Bird Survey.