Assertion: pelican | /r/CapableOf | lay thinner eggs
Facets:
Source sentences:
text: Pesticides used in the 1960s and 1970s caused pelicans to lay thinner eggs, which cracked during incubation (pelicans stand on their eggs to keep them warm), pushing the species close to extinction.
text: In the mid 20th century, the use of the pesticide DDT caused pelicans to lay thinner eggs that cracked under the weight of incubating parents.