#section.musical_organization  a division of an orchestra containing all instruments of the same class
  supertype:  #musical_organization__musicalorganization__musicalgroup  an organization of musicians who perform together
  part of:  #orchestra  #band.musical_organization
  subtype:  #string_section  the section of an orchestra that plays stringed instruments
     subtype:  #violin_section  the section of an orchestra that plays violins
  subtype:  #rhythm_section  the section of a band or orchestra that plays percussion instruments
  subtype:  #brass_section__brasssection  the section of a band or orchestra that plays brass instruments
     subtype:  #trumpet_section__trumpetsection  the section of a band or orchestra that plays trumpets or cornets
  subtype:  #reed_section  the section of a band or orchestra that plays reed instruments
     subtype:  #clarinet_section  the section of a band or orchestra that plays clarinets

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