prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  request
   +--examples
   +--lib
   `--tests
       +--browser
       |   `--ssl
       +--fixtures
       `--ssl
           `--ca
  ```
  
  Convert this description:
  
  nested-both is a base directory that features 2 subdirectories: a and node_modules.
  In the root directory, 'a' holds 1 folders: b.
  Within directory hierarchy 'a → b', 'b' possesses 1 subfolders: c.
  At level 3, in directory path 'a > b > c', 'c' features 1 directory entries: d.
  Within directory hierarchy 'a > b > c > d', 'd' holds no subdirectories at the moment.
  Back to the top level.
  At the main level, 'node_modules' is vacant.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "nested-both\n +--a\n |   `--b\n |       `--c\n |           `--d\n `--node_modules", "description": "nested-both is a base directory that features 2 subdirectories: a and node_modules.\nIn the root directory, 'a' holds 1 folders: b.\nWithin directory hierarchy 'a \u2192 b', 'b' possesses 1 subfolders: c.\nAt level 3, in directory path 'a > b > c', 'c' features 1 directory entries: d.\nWithin directory hierarchy 'a > b > c > d', 'd' holds no subdirectories at the moment.\nBack to the top level.\nAt the main level, 'node_modules' is vacant.\n"}