Assertion: bald eagle | /r/HasProperty | affected in the mid-20th century
Facets:
value: severely
type: DEGREE
value: by a pesticide
type: CAUSE
value: by a variety of factors
type: CAUSE
Source sentences:
text: Once a common sight in much of the continent, the bald eagle was severely affected in the mid-20th century by a variety of factors, among them the thinning of egg shells attributed to use of the pesticide DDT.
text: The Bald Eagle was severely affected in the mid-20th century by a pesticide known as DDT.