Relation pm#asymmetric_relation (?,?)  this category only serves structuration purposes: it is instance of pm#asymmetric_relation_type which is not instance of pm#class_of_inheritable_relation_type
  subtype:  immediate_instance  immediate_subclass  range  range_subclass  valence  documentation  successor_attribute  front_fn  back_fn  proper_part  contains  member  contains_information {leader exploits has_purpose} {attribute manner} (sumo)  probability_fn  in_list  closed_on  reflexive_on  irreflexive_on  partial_ordering_on  total_ordering_on  trichotomizing_on  equivalence_relation_on  causes  causes_subclass  time  holds_during  has_skill  crosses  penetrates  possesses  precondition  realization  expressed_in_language  uses  identity_element  element  cardinality_fn  measure  duration  frequency  meets_temporally  date  surface  interior_part  hole  hole_host_fn  partially_fills  properly_fills  completely_fills  fills  hole_skin_fn  geographic_subregion  geopolitical_subdivision  developmental_form  inhabits  authors  editor  publishes  version  parent  husband  wife  citizen  modal_attribute
  type:  asymmetric_relation_type  an antisymmetric and irreflexive relation
  supertype:  irreflexive_relation__irreflexiverelation (?,?)  this category only serves structuration purposes: it is instance of pm#irreflexive_relation_type which is not instance of pm#class_of_inheritable_relation_type
     supertype:  binary_relation_with_particular_mathematical_property (?,?)
        supertype:  relation_with_particular_mathematical_property (*)
           supertype:  relation_with_particular_property (*)  this rather fuzzy type permits to group categorization schemes less common than those covered by the previous sibling categories
              >part of:  relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
  supertype:  antisymmetric_relation__antisymmetricrelation (?,?)  this category only serves structuration purposes: it is instance of pm#antisymmetric_relation_type which is not instance of pm#class_of_inheritable_relation_type
     supertype:  binary_relation_with_particular_mathematical_property (?,?)