Function dc#Date (? -> pm#entity)  to specify a date associated with an event in the life cycle of a resource; in WebKB, pm#time or other MORE PRECISE RELATIONS SHOULD BE USED INSTEAD
  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#creator  pm#spatial_origin  sumo#exploits  sumo#has_purpose  sumo#has_purpose_for_agent  pm#measure  pm#attribute  pm#name  rdf#value  pm#rdf_reification_relation  pm#support  pm#example  pm#syntax  akts#has-magnitude
  supertype:  pm#attributive_relation__attributiverelation (pm)  like pm#binary_relation, this type mostly exists to categorize what cannot be categorized elsewhere
  subtype:  pm#date (pm#situation -> pm#time_measure)
  subtype:  pm#authoring_time__authoringtime (pm#description_content/medium/container -> pm#time_measure)
     subtype:  pm#authoring_date__authoringdate (pm#description_content/medium/container -> pm#time_measure)
  subtype:  pm#publish_date__publishdate (? -> pm#entity)