|E5-CIDOC - This class comprises changes of states in cultural, social or physical systems, regardless of scale, brought about by a series or group of coherent physical, cultural, technological or legal phenomena. Such changes of state will affect instances of E77 Persistent Item or its subclasses. The distinction between an E5 Event and an E4 Period is partly a question of the scale of observation. Viewed at a coarse level of detail, an E5 Event is an 'instantaneous' change of state.
++Philosurfical: no slots added, even if we thinked about the causally-connected-to one...
Class(EVENT partial PERIOD
Class Description/Definition (Necessary Conditions)