Assertion: owl's eyesight | /r/HasProperty | keen
Facets:
Source sentences:
text: Most owls have special adaptions that help them to be able to catch their prey easily such as their keen eyesight, their soundless flying and the fact that they can hear and move their head in all directions.
text: Snowy owls have keen eyesight and great hearing, which can help them find prey that is invisible under thick vegetation or snowcover.