Assertion: quality parchment | /r/MadeOf | calf skin
Facets:
Source sentences:
text: Most north European parchment was made from sheep skin, although the finest quality parchment (often known as vellum) was made from calf skin.
text: Most north European parchment was made from sheep skin, although the finest quality parchment (often known as vellum) was made from calf skin.