Assertion: spider monkey's thumb | /r/HasProperty | vestigial
Facets:
value: of little use for such locomotion
type: OTHER
Source sentences:
text: The thumb is only vestigial, but the fingers are long and strong, making the hands hook-like.
text: Woolly spider monkeys often move by swinging from branch to branch, although their thumbs are vestigial and of little use for such locomotion.