| http://www.w3.org/ns/prov#value | - the first embodiment, FIG. 4 is a diagram illustrating an example of a manner of adding and retaining valuable data in the e-purse according to the first embodiment, FIGS. 5 and 6 are diagrams respectively illustrating other examples of a manner of adding and retaining valuable data in the e-purse according to the first embodiment, and FIGS. 7 and 8 are diagrams respectively illustrating further
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