Assertion: horseshoe crab's population | /r/CapableOf | improve to 15,400
Facets:
value: by 2015
type: TEMPORAL
value: slightly
type: DEGREE
Source sentences:
text: American red knot populations have crashed since the late 1980s—from roughly 100,000 birds in 1989 to 36,000 in 2001 to less than 15,000 by 2008, with the population improving slightly, to about 15,400, by 2015.