Description: identifier for the purpose of distinguishing one product resource from all other product resources, regardless of how that purpose is accomplished (e.g. by name, address, or context); Name: device instance uri
Description: Unique global identification of the product using an universal resource identifier (URI); Name: URI of the product
Description: integral of the sound power, p, over a stated time interval of duration t (starting at t1 and ending at t2); Name: sound energy