24. The computer readable storage medium of claim 19 , wherein a hypothetical fact comprises a value having one or more original terms and wherein instructions for corroborating a hypothetical fact using the electronics documents further comprises instructions for: identifying an electronic document that mentions the one or more original terms of the hypothetical fact; and examining contextual clues in the electronic document to determine whether the hypothetical fact can be expanded to include one or more additional terms, and, responsive to a positive determination that the hypothetical fact can be expanded, creating a new hypothetical fact having the original terms and the additional terms.
24. The computer readable storage medium of claim 19 , wherein a hypothetical fact comprises a value having one or more original terms and wherein instructions for corroborating a hypothetical fact using the electronics documents further comprises instructions for: identifying an electronic document that mentions the one or more original terms of the hypothetical fact; and examining contextual clues in the electronic document to determine whether the hypothetical fact can be expanded to include one or more additional terms, and, responsive to a positive determination that the hypothetical fact can be expanded, creating a new hypothetical fact having the original terms and the additional terms. 25. The computer readable storage medium of claim 24 , wherein the electronic document is described by a markup language having open and close tags and wherein the fact expansion module is adapted to identify open and close tags surrounding the original terms in the electronic document, and identify additional terms within the open and close tags surrounding the original terms in the electronic document.