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Answers are marked at the source: the exact sentence, on the exact page. If the docs don't cover it, you get a refusal, not a guess.

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Corpus: Express 5 documentation, © The Express Contributors, CC BY 4.0. Not affiliated with or endorsed by Express.

Built by Karthik Uppari

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answer retrieved passage

How DocuMind answers

ChunkPages are split at headings, so an answer stays in one piece.
RetrieveKeyword search and a local semantic index each vote, then a reranker orders the top passages.
Answer or refuseOnly from those passages, with the source marked. Unknown words or weak matches mean a refusal.

Measured on a 50-question set written for this corpus. The tables and their limits are in the repository's eval/results.