32. The system of claim 17 , in which entries in the phrasal information structure associated with a false context are removed from the phrasal information structure.
17. A packed meaning generation system comprising: an input/output circuit for receiving information; a memory; a processor that determines unordered rewrite rules and ordered rewrite rules based on a packed meaning representation, wherein unordered rewrite rules in semantic relation are associated with a corresponding pseudofact variable such that each pseudofact variable is associated with multiple unordered rewrite rules, where the processor determines entries in a phrasal information structure based on the packed meaning representation and a lexicon and in which the entries are comprised of syntactic information, semantic information, and corresponding source information associated with the lexicon, and where the processor substitutes pseudofact variables into the phrasal information structure for matching semantic information based on the unordered rewrite rules; a phrasal entry combination circuit that combines entries in the phrasal information structure based on the ordered rewrite rules, syntactic information, and semantic information; wherein the processor merges entries in the phrasal information structure where the syntactic and semantic information of the entries indicate equivalent meaning and determines a root phrasal entry in the phrasal information structure; and a generation circuit that determines alternate phrases based on the source information for the determined root phrasal entry to form a resulting packed meaning representation.