Task:
  Explain how to bake sourdough bread and provide a brief historical background.


Success Criteria:
  - The baking explanation must be no longer than 100 words.
  - The historical background can be more detailed but should be provided separately if needed.


Examples:
  - Normal case: Provide concise baking instructions in 100 words with a brief mention of history.
  - Edge case: If the user requests only the history, provide a summary of the baking process in addition.
