#four-part_harmony  harmony in which each chord has four notes that create four melodic lines
  supertype:  #musical_harmony__musicalharmony__harmony  the structure of music with respect to the composition and progression of chords
     supertype:  #music  an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner
        supertype:  #fine_art__art  the products of human creativity; works of art collectively; "an art exhibition"; "a fine collection of art"
           supertype:  #creation_result__creation  an artifact that has been brought into existence by someone
              supertype:  pm#owned_entity__ownedentity
                 supertype:  pm#entity_playing_some_role  e.g., an agent, an owner
                    supertype:  pm#entity  something that can be "involved" in a situation
                       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
                    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
              supertype:  pm#created_thing__createdthing  e.g., entity or situation that results from a process; in WordNet, #creation_result is for entities while #resultant is for situation
                 supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant

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