Assertion: leather | /r/MadeOf | the skins of cattle and calves
Facets:
Source sentences:
text: Most leather produced and sold in the U.S. is made from the skins of cattle and calves, but leather is also made from sheep, lambs, goats, and pigs.
text: Most leather produced and sold in the U.S. is made from the skins of cattle and calves, but leather is also made from sheep, lambs, goats, and pigs.