16. The method of claim 9 , further comprising: receiving a search string; identifying a second logical representation corresponding to said search string; locating said second logical representation within a knowledge base; retrieving a second set of possible interpretations from said knowledge base; and augmenting said second search string with one or more search string augmentations corresponding to said second set of possible interpretations.
16. The method of claim 9 , further comprising: receiving a search string; identifying a second logical representation corresponding to said search string; locating said second logical representation within a knowledge base; retrieving a second set of possible interpretations from said knowledge base; and augmenting said second search string with one or more search string augmentations corresponding to said second set of possible interpretations. 25. The method of claim 16 , further comprising retrieving a plurality of documents containing at least one of said search string augmentations.