Assertion: graphite | /r/ObjectUse | used as lead
Facets:
value: originally
type: MANNER
value: in lead pencils
type: OTHER
value: in pencils
type: LOCATION
Source sentences:
text: It is interesting to note that graphite is used as lead in pencils for writing purposes and as a good lubricant in heavy and light bearings -- in its dry form as well as after mixing it with grease and oil.
text: These weaker bonds also allowed graphite to have originally been used as the ‘lead’ in lead pencils.