Assertion: cougar | /r/CapableOf | play critical role
Facets:
value: in maintaining deer populations
type: TRANSITIVE-OBJECT
value: as a top predator
type: MANNER
Source sentences:
text: As a top predator, cougars play a critical role in maintaining the health of the ecosystems they live in.
text: Mountain lions — also known as cougars, pumas and many other names — play a critical role in maintaining deer populations, which in turn maintain the health of the forest understory.