The purpose of this hierarchy is to provide values for the CIDOC-CRM entity E39 Actor:
This class comprises people, either individually or in groups, who have the potential to perform intentional actions for which they can be held responsible.
The CRM does not attempt to model the inadvertent actions of such actors. Individual people should be documented as instances of E21 Person, whereas groups should be documented as instances of either E74 Group or its subclass E40 Legal Body.
ISO 21127:2014 Information and documentation -- A reference ontology for the interchange of cultural heritage information