Something done over a particular Time-Interval. The following may pertain to an Activity: * is performed by one or more Actual-Doer s; * is decomposed into more detailed Sub-Activity s; * Can-Use-Resource s; * An Actor may Hold-Authority to perform it; * there may be an Activity-Owner; * has a measured efficiency.
(=> (Activity-Or-Spec ?X) (Or (Activity ?X) (Activity-Spec ?X)))
(<=> (Activity-Or-Spec ?X) (And (Eo-Entity ?X) (Or (Activity ?X) (Activity-Spec ?X))))