Assertion: sea otter | /r/CapableOf | play critical role
Facets:
value: in food webs
type: LOCATION
value: very
type: DEGREE
Source sentences:
text: Sea otters are a keystone species and play a critical role in the food web of the kelp forest, so much so that even terrestrial species are influenced by sea otter activity.
text: Sea otters play a very critical role in food webs.