## Turn 1

*   Source [S1]: Service warranty lasts 24 months for residential customers.
    *   Source [S2]: Commercial customers receive 12 months of warranty.
    *   Source [S3]: Batteries are excluded after 6 months.
    *   Question: What warranty applies to a residential customer?

    *   [S1] explicitly mentions residential customers: "The service warranty lasts 24 months for residential customers."

    *   Answer: The service warranty lasts 24 months for residential customers [S1].