| http://www.w3.org/ns/prov#value | - Again, the cancellation in step 1122 can be undertaken if the user account falls below the level needed to execute the transaction, or if the user otherwise indicates (prior to execution or some amount of time) that he no longer wishes to proceed.In the event that there is a difference between what the buyer will pay and what he seller will accept, for example, if there are buyers willing to pay m
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