Assertion: big toe | /r/HasProperty | allows
Facets:
value: for grasping
type: PURPOSE
value: for perching
type: PURPOSE
Source sentences:
text: In birds with anisodactyl or heterodactyl feet, the hallux is opposed or directed backwards and allows for grasping and perching.
text: In birds with anisodactyl or heterodactyl feet, the hallux is opposed or directed backwards and allows for grasping and perching.