## Turn 1

1.  **Analyze the Request:**
    *   Task: Answer the question "What is the backup retention policy?" using only relevant chunks.
    *   Chunks provided:
        *   [A] The router login page is blue.
        *   [B] The backup retention policy is 35 days.
        *   [C] Penguins are birds.
    *   Output format: Answer with the policy and citation.

2.  **Evaluate Chunks for Relevance:**
    *   [A] Irrelevant (talks about a router login page).
    *   [B] Relevant (explicitly states the backup retention policy is 35 days).
    *   [C] Irrelevant (talks about penguins).

3.  **Formulate the Answer:**
    *   Policy: 35 days.
    *   Citation: [B].
    *   Combine: The backup retention policy is 35 days [B].

4.  **Final Check:** Does the answer directly address the question using only the relevant chunk and include the citation? Yes.