#walnut  nut of any of various walnut trees having a wrinkled two-lobed seed with a hard shell
  supertype:  edible_nut  a hard-shelled seed consisting of an edible kernel or meat enclosed in a woody or leathery shell
  subtype:  black_walnut  English_walnut
  part of:  walnut_tree__walnut  any of various trees of the genus Juglans

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