Affects: SAREF

Situation: SAREF contains the classes saref:IlluminanceUnit, saref:PowerUnit, saref:PressureUnit, saref:TemperatureUnit, saref:EnergyUnit. However, they are not mentioned in the SAREF TS document. There are classes for these units in OM, QUDT, or even a datatype for this in cdt:ucum. Also, their definition is "The unit of measure for { ?label }". This is misleading as this is a class, not an instance. There is usually more than one unit of measure for a quantity kind

Proposal: delete these classes, moved to specific instance files using the ontology under consideration and that people can download to understand how SAREF can be used