Relation pm#creator (pm#entity,pm#entity)
  exclusion:  rst#attributive_relation  pm#purpose  aktp#has-author  aktp#owned-by  pm#owner  pm#owner_of  sumo#leader  pm#seller  pm#customer  pm#generator  pm#spatial_origin  sumo#exploits  sumo#has_purpose  sumo#has_purpose_for_agent  pm#measure  pm#attribute  pm#name  dc#Date  rdf#value  pm#rdf_reification_relation  pm#support  pm#example  pm#syntax  akts#has-magnitude
  supertype:  pm#attributive_relation  pm#who_relation
  subtype:  dc#Creator (pm#entity,pm#entity)  to specify an entity primarily responsible for making the content of a resource
     subtype:  pm#author (pm#description,pm#causal_entity)
        subtype:  pm#main_author (pm#description,pm#causal_entity)
        subtype:  pm#co-author (pm#description,pm#causal_entity)