prompt: Your task is to convert the following English description into an ASCII tree format.
  
  evaluation is a principal directory that houses 2 subdirectories: metrics and src.
  At the main level, Inside 'metrics', you'll find it is a vacant space.
  At the top level, The 'src' storage space groups 3 folders for code organization.
  Within directory hierarchy 'src > memzero', Inside 'memzero', you'll find it contains no subdirectories.
  Within directory hierarchy 'src > openai', 'openai' stands empty.
  In nested path 'src > zep', The 'zep' directory is a vacant space.
  
  
  Format your response in this style:
  ```
  docs
   +--dsl
   |   +--docbook
   |   |   `--model
   |   +--links
   |   `--source
   |       `--model
   `--model
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "evaluation\n +--metrics\n `--src\n     +--memzero\n     +--openai\n     `--zep", "description": "evaluation is a principal directory that houses 2 subdirectories: metrics and src.\nAt the main level, Inside 'metrics', you'll find it is a vacant space.\nAt the top level, The 'src' storage space groups 3 folders for code organization.\nWithin directory hierarchy 'src > memzero', Inside 'memzero', you'll find it contains no subdirectories.\nWithin directory hierarchy 'src > openai', 'openai' stands empty.\nIn nested path 'src > zep', The 'zep' directory is a vacant space.\n"}