Incorrect chapter assignment: "The Riddle House" wrongly placed in Book 3 instead of Book 4

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Description

In the CoSER dataset, there is an entry under Book 3 (Prisoner of Azkaban) with the field:

"chapter": "The Riddle House"

However, "The Riddle House" is Chapter 1 of Book 4 (Goblet of Fire), not part of Book 3.

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Evidence

• Book 3 canonical chapters (22 total) start with "Owl Post" and do not contain "The Riddle House".
• Book 4 canonical chapters (37 total) start with "The Riddle House".
• The scenario content in the dataset (Frank Bryce, Voldemort, Wormtail in the Riddle House) exactly matches events from Book 4, Chapter 1.

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Impact

• Incorrect book–chapter mapping could cause:

  • Retrieval mismatches
  • Incorrect temporal alignment in point-in-time datasets
  • Fine-tuning data contamination with wrong period context

• Models trained on this data may produce historically inaccurate responses.

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Steps to Reproduce

1. Load the CoSER dataset.

2. Filter for Book 3 entries.

3. Locate any entry with:

   "chapter": "The Riddle House"

4. Read its scenario and dialogues.

5. Confirm that the content matches Book 4, Chapter 1 events.

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Suggested Fix

• Move this entry from Book 3 to Book 4.
• Update its chapter_index to 1.
• Retain existing text content, as it is correct for Book 4’s first chapter.

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References

• [HP Wiki – List of chapters in the Harry Potter books](https://harrypotter.fandom.com/wiki/List_of_chapters_in_the_Harry_Potter_books)
• [HP Wiki – The Riddle House (Chapter)](https://harrypotter.fandom.com/wiki/The_Riddle_House)

[Neph0s]

Thanks for bringing this to our attention.

There exist some mismatch issues in the 'chapter' values (or files). There could be multiple causes for these issues, from source text, llm extraction, or other processing. We tried our best to make it as accurate as possible. However, it is hard to ensure these values are always correct. Use it carefully.

Thanks again for your issue.