Relation dl#location (dl#entity,dl#region)
  supertype:  dl#exact_location__exactlocation
  inverse:  dl#location_of
  subtype:  dl#physical_location (dl#physical_endurant,dl#physical_region)
     subtype:  dl#spatial_location__spatiallocation (dl#physical_endurant,dl#space_region)
  subtype:  dl#temporal_location (dl#perdurant,dl#temporal_region)
     subtype:  dl#duration (dl#perdurant,dl#temporal_region)