Assertion: marble | /r/HasAspect | a hardness of three
Facets:
Source sentences:
text: Hardness: Being composed of calcite, marble has a hardness of three on the Mohs hardness scale.
text: Hardness : Being composed of calcite, marble has a hardness of three on the Mohs hardness scale.
text: : Being composed of calcite, marble has a hardness of three on the Mohs hardness scale.