Relation pm#relation_to_a_thing_that_is_not_a_domain__domain-related-object (?,thing_that_is_not_a_domain)
  closed_exclusion:  relation_to_a_domain
  supertype:  domain_related_relation__domain-related-thing
  instance of:  virtual_relation_type
  subtype:  domain_object (domain,?)
     subtype:  core_domain_object__central_object_of_domain (domain,?)
  subtype:  object_in_domain (?,thing_that_is_not_a_domain)