Assertion: narwhal's body | /r/CapableOf | rev up a fight or flightresponse
Facets:
value: to power
type: PURPOSE
Source sentences:
text: Normally when an animal is scared, it either remains very still and slows its heart rate and metabolism in hope that danger will pass—like a possum playing dead, in an extreme case—or the body revs up to power a “fight or flight” response.