Assertion: chinese alligator's eyelid | /r/CapableOf | close at the back of the throat
Facets:
value: to keep water
type: PURPOSE
Source sentences:
text: Flaps close off the ears and nostrils, the inner eyelids protect the eyes and a special flap called the palatal valve closes at the back of the throat to keep water out of the throat, stomach and lungs.