Assertion: snake | /r/HasAspect | vestigial
Facets:
Source sentences:
text: Snakes have no eyelids, no external ear openings and no legs, although a few snakes, such as boa constrictors and pythons have vestigial (concealed or hidden) hind legs which are tiny, clawed digits known as ‘anal spurs’ which are used to grasp during mating.