> For the complete documentation index, see [llms.txt](https://tailwindsdocs.innovativesol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tailwindsdocs.innovativesol.com/readme/chatflows/langchain/chains/retrieval-qa-chain.md).

# Retrieval QA Chain

QA chain to answer a question based on the retrieved documents.

<figure><img src="https://662370747-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3VoWwSsyrEg0DEvIIjv9%2Fuploads%2Fgit-blob-31db27494d6bd0f50ddc3a4dca70f51a05ee6825%2Fimage%20(38).png?alt=media" alt="" width="337"><figcaption><p>Retrieval QA Chain Node</p></figcaption></figure>