prov:value
| - type of vender, may be supplied by the user, and/or may be retrieved from a database, a service registry, or other source that includes data of acceptable payment accounts for the particular vender, the particular type of vender (e.g., a restaurant), the particular product (e.g., an airline ticket from a particular airline), the particular type of product (e.g., food), and/or the location of the v
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