13. The apparatus of claim 8 , wherein the set of question characteristics is one or more of an average sentence length, various counts of sentence sub-structure, phrase boundaries, average word length, number of characters in a sentence, number of words in a passage, number of sentences in a passage, or average sentence lexical composition.
8. An apparatus comprising: a processor; and a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to: parse a received input question having a set of question characteristics; compare the set of question characteristics found in the received input question to a set of data characteristics respectively describing data in each corpus of a corpora; for each question characteristic in the set of found question characteristics: responsive to the question characteristic being more related to a data characteristic in the set of data characteristics, assign a first weight to the corpus within which data associated with the data characteristic resides; and responsive to the question characteristic being less related to the data characteristic in the set of data characteristics, assign a second weight to the corpus within which the data associated with the data characteristic resides, wherein the first weight is greater than the second weight; and selectively search for an answer to the received input question in one or more corpora with a higher weighting preferentially to one or more corpora with a lower weighting.