Assertion: pencil's lead | /r/HasProperty | hard
Facets:
Source sentences:
text: Also, based on the hardness of their lead, pencils are classified into hard and soft leads.
text: Easy-to-use pencils also blend more readily than their counterparts; if the lead has too much wax or if the lead is too hard, it will make the color much more difficult to blend.
text: You can sharpen it to a very fine point, but the lead is hard and again, does not blend well and leaves dents in the paper where you drew.