Assertion: pencil's lead | /r/ObjectUse | used in standard graphite pencils
Facets:
value: before binding the mixture with clay
type: TEMPORAL
Source sentences:
text: The lead is fabricated by adding a dry water-soluble permanent dye to powdered graphite—used in standard graphite pencils—before binding the mixture with clay.
text: The lead is fabricated by adding a dry water-soluble permanent dye to powdered graphite—used in standard graphite pencils—before binding the mixture with clay.