Assertion: owl's eyelid | /r/HasProperty | thin layer of tissue
Facets:
Source sentences:
text: The third eyelid is called a nictitating membrane, and is a thin layer of tissue that closes diagonally across the eye, from the inside to the outside.
text: They also don’t have eyelids, just a thin membrane covering the eye.
text: The third eyelid is called a nictitating membrane, and is a thin layer of tissue that closes diagonally across the eye, from the inside to the outside.