Assertion: great horned owl's feature | /r/HasProperty | key
Facets:
value: to telling them
type: PURPOSE
Source sentences:
text: Recognizing its key features and field marks can help birders properly identify this owl, despite the fact that great horned owls in different ranges can be different colors.
text: All puffin species are very similar; however, their beaks and facial features are the key to telling them apart.