prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  [lang]
   +--@modal
   |   +--(.)feed
   |   `--(.)photos
   |       `--[id]
   +--feed
   `--photos
       `--[id]
  ```
  
  Convert this description:
  
  foo is a head directory that encompasses 2 subdirectories: opt and start.
  At the top level, 'opt' organizes 4 numerous subdirectory elements.
  At level 2, in directory path 'opt → bonus', 'bonus' houses 2 nested folders: autoload, lua.
  At level 3, in directory path 'opt > bonus > autoload', The 'autoload' storage space is empty.
  At level 3, in directory path 'opt → bonus → lua', 'lua' contains no subdirectories.
  In nested path 'opt > funky', Inside 'funky', you'll find it holds no subdirectories at the moment.
  At level 2, in directory path 'opt > healthy', 'healthy' maintains 1 subdirectory elements: lua.
  At level 3, in directory path 'opt > healthy > lua', 'lua' maintains 1 subdirectories: nest.
  In nested path 'opt / healthy / lua / nest', The 'nest' folder contains no subdirectories.
  At level 2, in directory path 'opt → superspecial', 'superspecial' comprises 1 test-related directories.
  In nested path 'opt → superspecial → after', The 'after' collection is a vacant space.
  In the root directory, 'start' holds 2 subdirectories: bar, fancyplugin.
  In nested path 'start > bar', 'bar' encompasses 2 directories: autoload, lua.
  Within directory hierarchy 'start → bar → autoload', The 'autoload' section hasn't been filled with any content.
  In nested path 'start → bar → lua', The 'lua' storage space is empty.
  In nested path 'start > fancyplugin', 'fancyplugin' retains 2 subdirectory elements: after, lua.
  In nested path 'start / fancyplugin / after', 'after' stores 1 folders: lua.
  Within directory hierarchy 'start → fancyplugin → after → lua', The 'lua' collection appears to be unused.
  Within directory hierarchy 'start → fancyplugin → lua', 'lua' retains 2 contained folders: fancy_x, fancy_y.
  Within directory hierarchy 'start > fancyplugin > lua > fancy_x', Inside 'fancy_x', you'll find it is a vacant space.
  At level 4, in directory path 'start → fancyplugin → lua → fancy_y', The 'fancy_y' folder has no folders inside.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "foo\n +--opt\n |   +--bonus\n |   |   +--autoload\n |   |   `--lua\n |   +--funky\n |   +--healthy\n |   |   `--lua\n |   |       `--nest\n |   `--superspecial\n |       `--after\n `--start\n     +--bar\n     |   +--autoload\n     |   `--lua\n     `--fancyplugin\n         +--after\n         |   `--lua\n         `--lua\n             +--fancy_x\n             `--fancy_y", "description": "foo is a head directory that encompasses 2 subdirectories: opt and start.\nAt the top level, 'opt' organizes 4 numerous subdirectory elements.\nAt level 2, in directory path 'opt \u2192 bonus', 'bonus' houses 2 nested folders: autoload, lua.\nAt level 3, in directory path 'opt > bonus > autoload', The 'autoload' storage space is empty.\nAt level 3, in directory path 'opt \u2192 bonus \u2192 lua', 'lua' contains no subdirectories.\nIn nested path 'opt > funky', Inside 'funky', you'll find it holds no subdirectories at the moment.\nAt level 2, in directory path 'opt > healthy', 'healthy' maintains 1 subdirectory elements: lua.\nAt level 3, in directory path 'opt > healthy > lua', 'lua' maintains 1 subdirectories: nest.\nIn nested path 'opt / healthy / lua / nest', The 'nest' folder contains no subdirectories.\nAt level 2, in directory path 'opt \u2192 superspecial', 'superspecial' comprises 1 test-related directories.\nIn nested path 'opt \u2192 superspecial \u2192 after', The 'after' collection is a vacant space.\nIn the root directory, 'start' holds 2 subdirectories: bar, fancyplugin.\nIn nested path 'start > bar', 'bar' encompasses 2 directories: autoload, lua.\nWithin directory hierarchy 'start \u2192 bar \u2192 autoload', The 'autoload' section hasn't been filled with any content.\nIn nested path 'start \u2192 bar \u2192 lua', The 'lua' storage space is empty.\nIn nested path 'start > fancyplugin', 'fancyplugin' retains 2 subdirectory elements: after, lua.\nIn nested path 'start / fancyplugin / after', 'after' stores 1 folders: lua.\nWithin directory hierarchy 'start \u2192 fancyplugin \u2192 after \u2192 lua', The 'lua' collection appears to be unused.\nWithin directory hierarchy 'start \u2192 fancyplugin \u2192 lua', 'lua' retains 2 contained folders: fancy_x, fancy_y.\nWithin directory hierarchy 'start > fancyplugin > lua > fancy_x', Inside 'fancy_x', you'll find it is a vacant space.\nAt level 4, in directory path 'start \u2192 fancyplugin \u2192 lua \u2192 fancy_y', The 'fancy_y' folder has no folders inside.\nBack to the top level.\n"}