47. The apparatus of claim 46 wherein instructions to perform an initialization comprise instructions to: expand “that” patterns; arrange “that” patterns alphabetically; assign a specificity rank to each “that” pattern; and add each “that” pattern to a “that” trie.
47. The apparatus of claim 46 wherein instructions to perform an initialization comprise instructions to: expand “that” patterns; arrange “that” patterns alphabetically; assign a specificity rank to each “that” pattern; and add each “that” pattern to a “that” trie. 48. The apparatus of claim 47 wherein instructions to perform an initialization comprise instructions to: expand megacategories into conjunctions; order the conjunctions alphabetically; and add each megacategory to a megacategory trie.