An apparatus for preventing particulate matter and residue build-up within a vacuum exhaust line of a semiconductor processing device. At least a first dielectric layer is printed on the first surface of the first circuitry layer to include a plurality of first recesses. The ball circulating passage is a concaved groove formed by concaving a groove on a part of the cylindrical inner circumferential surface of the nut by plastic working. Finally, a sentence generator receives the logical schema specification and creates natural language for the assessment item based on the variables defined in the logical schema specification. The native homepage may include information associated with accessing the content.