Assertion: hoof | /r/HasProperty | strengthened by thick and horny keratin
Facets:
Source sentences:
text: A hoof ( or ), plural hooves ( or ) or hoofs , is the tip of a toe of an ungulate mammal, strengthened by a thick and horny keratin covering.
text: The hoof is the tip of a toe of an ungulate mammal, strengthened by a thick horny (keratin) covering.
text: A hoof ( or ), plural hooves ( or ) or hoofs , is the tip of a toe of an ungulate mammal, strengthened by a thick and horny keratin covering.