Assertion: lead | /r/AtLocation | ceramic body
Facets:
value: directly
type: MANNER
value: from galena
type: LOCATION
Source sentences:
text: Lead could be added directly to a ceramic body in the form of a lead compound in suspension, either from galena (PbS), red lead (Pb 3 O 4 ), white lead (2PbCO 3 ·Pb(OH) 2 ), or lead oxide (PbO).