Assertion: gypsy moth | /r/Causes | significant defoliation
Facets:
value: since the 1980s
type: TEMPORAL
value: in new england
type: LOCATION
Source sentences:
text: Though gypsy moth outbreaks are a fairly regular occurrence in the more southern portion of their invaded range, this outbreak was the first time gypsy moths caused significant defoliation in New England since the 1980s.