prompt: Your task is to convert the following English description into an ASCII tree format.
  
  isr is a main directory that incorporates 2 subdirectories: app and pages.
  At the main level, The 'app' compartment stores 1 folders for code organization.
  Within directory hierarchy 'app / app', 'app' houses 4 subdirectories that organize the source code.
  At level 3, in directory path 'app → app → on-demand', 'on-demand' has yet to be populated.
  In nested path 'app → app → route', 'route' encapsulates 2 contained folders: on-demand, stale.
  Within directory hierarchy 'app / app / route / on-demand', Inside 'on-demand', you'll find it sits empty.
  Within directory hierarchy 'app / app / route / stale', Inside 'stale', you'll find it is unpopulated.
  Within directory hierarchy 'app / app / self-revalidate', 'self-revalidate' is barren.
  At level 3, in directory path 'app → app → stale', 'stale' stands empty.
  At the main level, 'pages' maintains 2 directories: api, pages.
  Within directory hierarchy 'pages > api', 'api' is devoid of content.
  In nested path 'pages → pages', Inside 'pages', you'll find it has no content.
  Back to the top level.
  
  
  Format your response in this style:
  ```
  logical-expression
   +--deopzimize-while-included
   +--mutate-logical-expression
   |   `--_expected
   `--simplify-non-boolean
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "isr\n +--app\n |   `--app\n |       +--on-demand\n |       +--route\n |       |   +--on-demand\n |       |   `--stale\n |       +--self-revalidate\n |       `--stale\n `--pages\n     +--api\n     `--pages", "description": "isr is a main directory that incorporates 2 subdirectories: app and pages.\nAt the main level, The 'app' compartment stores 1 folders for code organization.\nWithin directory hierarchy 'app / app', 'app' houses 4 subdirectories that organize the source code.\nAt level 3, in directory path 'app \u2192 app \u2192 on-demand', 'on-demand' has yet to be populated.\nIn nested path 'app \u2192 app \u2192 route', 'route' encapsulates 2 contained folders: on-demand, stale.\nWithin directory hierarchy 'app / app / route / on-demand', Inside 'on-demand', you'll find it sits empty.\nWithin directory hierarchy 'app / app / route / stale', Inside 'stale', you'll find it is unpopulated.\nWithin directory hierarchy 'app / app / self-revalidate', 'self-revalidate' is barren.\nAt level 3, in directory path 'app \u2192 app \u2192 stale', 'stale' stands empty.\nAt the main level, 'pages' maintains 2 directories: api, pages.\nWithin directory hierarchy 'pages > api', 'api' is devoid of content.\nIn nested path 'pages \u2192 pages', Inside 'pages', you'll find it has no content.\nBack to the top level.\n"}