Assertion: marble | /r/HasProperty | hard
Facets:
value: relatively
type: DEGREE
value: to maintain
type: OTHER
Source sentences:
text: Marble Is Hard To Maintain
text: Both marble and porcelain are hard materials, but porcelain is rated on a PEI scale.
text: Marble itself can be expensive and hard to maintain, but when it comes to reliable and easy kitchen countertops, quartz is king.
text: Marble is relatively hard, but not as hard as granite.