Assertion: pencil's tip | /r/MadeOf | other material
Facets:
Source sentences:
text: The important difference between pens and pencils is that the tip of a pencil is made of solid graphite (or other material) which is rubbed off onto the paper.
text: The important difference between pens and pencils is that the tip of a pencil is made of solid graphite (or other material) which is rubbed off onto the paper.