| http://www.w3.org/ns/prov#value | - The fields specify: a seller identifier 1202; a seller name 1204; a seller type 1206; and a seller address 1208. [0167] The purchasing system device 310 may use the seller database 1200 to determine the seller type (i.e., whether the seller is a manufacturer or a retailer) and other information pertaining to a seller (such as the seller address for offer routing purposes or billing). [0168] The se
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