Assertion: rhino's horn | /r/HasProperty | same substance
Facets:
Source sentences:
text: The horn of a rhinoceros is made up of the mineral keratin, the same substance that can be found in human hair and nails.
text: Distinguishable from its relative the White Rhino by lip shape, Black Rhinos have a pointed upper lip that is perfect for grazing vegetation from trees and bushes and two horns on their head, which are made of keratin – the same substance as our hair and nails.
text: Rhino horns are made of keratin, the same substance that makes up our nails and hair.