#dialectic.contradiction  a contradiction of ideas that serves as the determining factor in their interaction; "this situation created the inner dialectic of American history"
  supertype:  #contradiction  opposition between two conflicting forces or ideas
     supertype:  #oppositeness__opposition  the relation between opposed entities
        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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