Relation pm#kind__type___class___instance_of__instanceof (?,rdfs#class)  the '^' link in the FT notation
  inverse:  pm#instance
  equal:  rdf#type (pm)  daml#type (pm)
  supertype:  pm#relation_to_class (*,rdfs#class)
     supertype:  pm#relation_to_set_or_class (*,pm#set_or_class)
        supertype:  pm#relation_to_collection (*,pm#collection)
           supertype:  pm#relation_from/to_thing_of_common_kind (*)  this type permits to categorize relations according to their signatures and hence offers (i) a concise way to set essential exclusion relations, and (ii) a systematic and easy-to-follow categorization
              >part of:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
           supertype:  pm#what_relation (*)
              supertype:  pm#wh-/how_relation (*)  this type permits to categorize relations according to the usual who/what/why/where/when/how questions ; this is a traditional but very subjective and ineffective way of categorizing relations 
                 >part of:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
     supertype:  pm#relation_to_type (*,pm#type)
        supertype:  pm#relation_to_collection (*,pm#collection)
  supertype:  pm#generalizing_type (?,pm#type)  fuzzy category, DO NOT USE DIRECTLY
     supertype:  pm#partial_ordering_relation (?,?)  this category only serves structuration purposes: it is instance of pm#partial_ordering_relation_type which is not instance of pm#class_of_inheritable_relation_type
        supertype:  pm#reflexive_relation__reflexiverelation (?,?)  this category only serves structuration purposes: it is instance of pm#reflexive_relation_type which is not instance of pm#class_of_inheritable_relation_type
           supertype:  pm#binary_relation_with_particular_mathematical_property (?,?)
              supertype:  pm#relation_with_particular_mathematical_property (*)
                 supertype:  pm#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:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
        supertype:  pm#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:  pm#binary_relation_with_particular_mathematical_property (?,?)
        supertype:  pm#transitive_relation (?,?)  this category only serves structuration purposes: it is instance of pm#transitive_relation_type which is not instance of pm#class_of_inheritable_relation_type
           supertype:  pm#binary_relation_with_particular_mathematical_property (?,?)
  supertype:  sumo#instance (?,sumo#set_or_class)  if the common reading conventions of parameters had been respected, this type would have been named instance_of; an object is an instance of a set_or_class if it is included in that set_or_class; an individual may be an instance of many classes, some of which may be subclasses of others; thus, there is no assumption in the meaning of instance about specificity or uniqueness
     supertype:  dc#Type (?,pm#entity)  to specify the nature or genre of the content of a resource; SHOULD NOT BE USED IN WEBKB
        supertype:  pm#binary_relation (?,?)  in WebKB, most relation types are binary and some have a variable number of arguments (as in KIF), hence this type is currently only specialized by types that I do not want to see as direct subtypes of pm#relation
           supertype:  pm#relation_with_particular_property (*)  this rather fuzzy type permits to group categorization schemes less common than those covered by the previous sibling categories