Assertion: wren's number | /r/CapableOf | drop to a low of 17 percent
Facets:
value: in recent years
type: TEMPORAL
value: from their previous populations
type: OTHER
value: in early 1960s
type: TEMPORAL
value: in the late 1950s
type: TEMPORAL
Source sentences:
text: 8.The number of eastern bluebirds has dropped to a low of 17 percent in recent years from their previous populations in the late 1950s and early 1960s.