Assertion: spider monkey's thumb | /r/HasProperty | reduced
Facets:
value: greatly
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: The thumb is reduced, which facilitates swinging and gripping branches and is an adaptation to their strictly arboreal lifestyle.
text: Thumbs are greatly reduced or non-existent.
text: For example, spider monkeys are not good tools users, as they have a very reduced thumb as an adaptation for their acrobatic arboreal locomotion, but they are excellent in inhibiting behavior and flexibly changing their response — abilities known to involve the prefrontal cortex.
text: Thumbs are greatly reduced or non-existent.