#rock_group__rock_band  a band of musicians who play rock-'n'-roll music
  supertype:  #dance_band__danceband__band__dance_orchestra__danceorchestra  a group of musicians playing popular music for dancing
  subtype:  #Beatles  a rock group from Liverpool who between 1962 and 1970 produced a variety of hit songs and albums (most of it written by Paul McCartney and John Lennon)

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