#walnut_tree__walnut  any of various trees of the genus Juglans
  supertype:  nut_tree__nuttree  tree bearing edible nuts
  subtype:  California_black_walnut  butternut_tree  black_walnut_tree  English_walnut_tree
  substance:  walnut.wood
  member of:  genus_Juglans
  part:  walnut  nut of any of various walnut trees having a wrinkled two-lobed seed with a hard shell

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