A multiprocessor computer system includes a method and system of handling invalidation requests to a plurality of alias processors not sharing a line of memory in a computer system. This structure has a source electrode and a drain electrode. As such, the document set may be represented as a directed graph in which document titles are nodes and links are edges between the nodes. Also, the amusement machine may have a receptacle having a starter circuit for permitting the participant to interact with the amusement machine. Moreover this method makes it far more likely to achieve cost effective compliance with the ever-increasing environmental standards for selenium in water. Such compositions according to the present invention have better stability to autooxidation and superior oxygen carrying characteristics.