#tone_language__tonal_language__tonallanguage  a language in which different tones distinguish different meanings
  supertype:  #natural_language__naturallanguage__tongue  a human written or spoken language used by a community; opposed to e.g. a computer language
  part:  #tone_system
  subtype:  #contour_language__contourlanguage  a tone language that uses pitch changes
  subtype:  #register_language  a tone language that uses different voice registers

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