Assertion: falcon's number | /r/CapableOf | increase on the sagavanirktok river
Facets:
value: from five
type: OTHER
value: to 23 in 1992
type: TEMPORAL
value: to 25
type: OTHER
value: in alaska
type: LOCATION
Source sentences:
text: On the Sagavanirktok River in Alaska where Arctic peregrine surveys have been conducted since the late 1950s, the number of pairs increased from five in 1958, to 23 in 1992, to 25 in 1999 .