| http://www.w3.org/ns/prov#value | - The installing, cutting and removal of all window glass, plate and all other types of glass, including structural glass, mirror glass, tempered and laminated glass, safety or protection glass, all types of insulating glass units, all plastics or other similar materials when used in place of glass and when set or glazed with putty, molding rubber, cement, lead and all types of mastic, or other mate
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