#inapplicability  irrelevance by virtue of being inapplicable to the matter at hand
  exclusion:  #applicability
  supertype:  #irrelevance  the lack of a relation of something to the matter at hand
     supertype:  #unconnectedness  the lack of a connection between things
        supertype:  #relation  an abstraction belonging to or characteristic of two entities or parts together
           supertype:  pm#thing_that_can_be_seen_as_a_relation  usable as relation type
              supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                 supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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