Assertion: snake's jaw | /r/HasProperty | upper
Facets:
Source sentences:
text: Called a pterygoid walk, the king snake opened up its jaw and alternately ratcheted toothy parts of its upper jaw over the surface of the prey, in turn “walking” its mouth over and around the prey.
text: A snake can dislocate its upper and lower jaws and separate the two sections of its lower jaw.
text: A snake can dislocate its upper and lower jaws and separate the two sections of its lower jaw.