Assertion: borax's boron | /r/HasProperty | hard
Facets:
value: fairly
type: DEGREE
value: as diamond
type: OTHER
value: almost
type: DEGREE
Source sentences:
text: Boron is fairly hard, and together with carbon and nitrogen forms a superhard and highly heat-resistant compound commonly called heterodiamond.
text: Boron is a hard metal and is considered the second hardest element in the world.
text: (3) Gamma-boron, as it has been called, is almost as hard as diamond and more heat-resistant than diamond.
text: Metallic boron is extremely hard and has a very high melting point.