Assertion: echidna | /r/CapableOf | allow object
Facets:
value: at different distances
type: MANNER
Source sentences:
text: Unlike placental mammals, including humans, the echidna does not have a ciliary muscle to distort the geometry of the lens and thereby change the focal length and allow objects at different distances to be viewed clearly; the whole eye is believed to distort, so the distance between the lens and retina instead changes to allow focusing.