Description: defines a way to encapsulate a name in any registered name space, and label it with the the name space, producing a member of the universal product set known as URI of a product; Name: Product URI
Description: Unique global identification of the product using an universal resource identifier (URI); Name: URI of the product
Description: Probability that an item is in a state to perform as required at a given instant, under given conditions, assuming that the necessary external resources are provided ; Name: Instantaneous availability