Assertion: porcelain | /r/HasProperty | tough
Facets:
value: very
type: DEGREE
value: in durability
type: OTHER
Source sentences:
text: Porcelain is tough in durability, and soft in visual appearance.
text: Porcelain is a very tough tile, and it is unlikely that homeowners will find any porcelain tiles that are not frostproof, since their construction usually leads naturally to frostproof qualities.