Assertion: brown pelican | /r/HasAspect | natural predators
Facets:
value: because of large powerful bills
type: CAUSE
value: because of their size
type: CAUSE
Source sentences:
text: Brown pelicans have no natural predators; their biggest enemies are humans, who have decimated pelican populations in the past.
text: Because of their size and large powerful bills, adult brown pelicans appear to have few natural predators while fishing the ocean coastlines.