Assertion: black rhinoceros's horn | /r/MadeOf | hair
Facets:
Source sentences:
text: The horn of a rhino is made of hair grown tightly together, awhile a natural “glue” from glands on the rhino’s nose packs these hairs tightly together.
text: The horn of a rhino is made of hair grown tightly together, awhile a natural “glue” from glands on the rhino’s nose packs these hairs tightly together.