Relation sumo#partition (sumo#class,sumo#class+)  a partition of a class C is a set of mutually disjoint classes (a subclass partition) covering C; each instance of C is instance of exactly one of the subclasses in the partition
  related_to:  daml#disjoint_union_of
  type:  pm#predicate_type__predicatetype  a sentence-forming relation with each tuple being a finite, ordered sequence of objects
  type:  pm#variable_arity_relation_type  class of relations that do not have a fixed number of arguments
  supertype:  sumo#disjoint_decomposition (sumo#class,sumo#class+)  a disjoint_decomposition of a class C is a set of mutually disjoint subclasses of C
     supertype:  pm#relation_to_another_class (rdfs#class,rdfs#class+)
        supertype:  pm#relation_from_class_to_collection (rdfs#class,pm#collection)
           supertype:  pm#relation_from_type_to_collection (pm#type,pm#collection)
              supertype:  pm#relation_between_collections (pm#collection,pm#collection+)
                 supertype:  pm#relation_from_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
                       supertype:  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 
                          supertype:  pm#relation__related_thing__relatedthing___related_with (*)  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
                 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
                    supertype:  pm#what_relation (*)
              supertype:  pm#relation_from_type (pm#type,*)  type of relations from a concept/relation type, i.e. in RDFS terminology, from a class or a property
                 supertype:  pm#relation_from_collection (pm#collection,*)
           supertype:  pm#relation_from_class (rdfs#class,*)
              supertype:  pm#relation_from_type (pm#type,*)  type of relations from a concept/relation type, i.e. in RDFS terminology, from a class or a property
        supertype:  pm#relation_to_another_set_or_class (pm#set_or_class,pm#set_or_class+)  this category is needed to group SUMO relations between classes which cannot be subtype of pm#relation_from_type because their signatures curiously also involve sets
           supertype:  pm#relation_between_collections (pm#collection,pm#collection+)
           supertype:  pm#relation_to_set_or_class (*,pm#set_or_class)
              supertype:  pm#relation_to_collection (*,pm#collection)
  supertype:  sumo#exhaustive_decomposition (sumo#class,sumo#class+)  an exhaustive_decomposition of a class C is a set of subclasses of C such that every instance of C is an instance of one of the subclasses in the set; note:  this does not necessarily mean that the elements of the set are disjoint (see sumo#partition - a partition is a disjoint exhaustive decomposition)
     supertype:  pm#relation_to_another_class (rdfs#class,rdfs#class+)


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