Assertion: pelican's population | /r/HasProperty | decimated in 1950
Facets:
value: by pesticides
type: CAUSE
value: by related compounds
type: OTHER
value: by ddt
type: OTHER
Source sentences:
text: Populations of brown pelicans (especially in California, Texas, and Louisiana) were decimated in the U.S. by pesticides (DDT and related compounds) in the 1950s and 60s.