| http://www.w3.org/ns/prov#value | - The coupon database that includes a mapping of coupon codes to the items or services for which the coupon can be applied, the coupon start date which indicates when the coupon can be first used, the coupon expiration date, an indication as to whether the coupon can or cannot be used in conjunction with other coupons, an optional unique code number that identifies each coupon, coupon status, that i
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