#beluga_caviar  roe of beluga sturgeon usually from Russia; highly valued
  supertype:  caviar__caviare  salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre
  part of:  beluga__hausen__white_sturgeon__whitesturgeon__Acipenser_huso  valuable source of caviar and isinglass; found in Black and Caspian seas

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