| http://www.w3.org/ns/prov#value | - FIG. 2 a-c depict e-mail forms which may be used by the embodiment of the invention in FIG. 1, wherein FIG. 2 a is a conventional send form, FIG. 2 b is a send form which is modified to work with the invention, and FIG. 2 c is a conventional receive form;
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