#fillet_of_sole__sole  lean flesh of any of several flatfish
  supertype:  #flatfish.saltwater_fish  sweet lean whitish flesh of any of numerous thin-bodied fish; usually served as thin fillets
  subtype:  #gray_sole  #lemon_sole
  part of:  #sole.flatfish  right-eyed flatfish; many are valued as food; most common in warm seas especially European

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