Relation pm#illustration (pm#description_content/medium/container,pm#description_content/medium/container)
  supertype:  pm#argument (pm#description_content/medium/container,pm#description_content/medium/container)
     supertype:  pm#argumentation_relation__argumentationrelation (pm#description_content/medium/container,pm#description_content/medium/container)
        supertype:  pm#relation_from_description_content/medium/container (pm#description_content/medium/container,*)
           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#example (?,pm#description_content/medium/container)
     supertype:  pm#attributive_relation__attributiverelation (*)  like pm#binary_relation, this type mostly exists to categorize what cannot be categorized elsewhere
        supertype:  pm#relation_playing_a_special_role (*)  this type permits to categorize relations according to their roles ; this is a traditional but quite subjective 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


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