Assertion: graphite | /r/HasProperty | mixed
Facets:
value: with clay
type: OTHER
value: according to the type of pencil
type: OTHER
Source sentences:
text: The graphite in pencils is mixed with clay during fabrication of the "lead" to help hold its shape, and would only burn at greater than 1,000 °C (1,832 °F).
text: The graphite is mixed with clay according to the type of pencil being made—the more graphite used, the softer the pencil, and the darker its line.