Assertion: purple martin | /r/CapableOf | decline in minnesota
Facets:
value: over the last four decades
type: TEMPORAL
value: drastically
type: MANNER
Source sentences:
text: “Purple martins have declined drastically in Minnesota over the last four decades or so,” said John Tautin, executive director of the Erie, Pa.-based Purple Martin Conservation Association, referencing annual bird studies by the U.S. Geological Survey’s Patuxent Wildlife Research Center.