Assertion: pencil | /r/CapableOf | use the hb system
Facets:
Source sentences:
text: Today, however, most pencils using the HB system are designated by a number such as 2B, 4B or 2H to indicate the degree of hardness.
text: Although today most pencils using the HB system are designated by a number such as 2B, 4B or 2H to indicate the degree of hardness.