Assertion: barn owl's feather | /r/CapableOf | create disc
Facets:
Source sentences:
text: The feathers on the edge of a Barn Owl’s heart shaped face create a disc, which works to trap and focus sound, rather like our outer ears.
text: The feathers making up this disc can be adjusted to sharply focus sounds from varying distances onto the owls' asymmetrically placed ear cavities.