Assertion: chimpanzee's lip | /r/HasProperty | pulled
Facets:
value: horizontally
type: MANNER
value: completely
type: DEGREE
Source sentences:
text: The expression commonly believed to be a smile – where the lips are pulled back completely to show both the top and bottom teeth – is actually what we call a fear grimace.
text: When lips are pulled back horizontally, it indicates fear and when they are pulled back vertically, it indicates hostility.