def cal_origin_responsetime(dfs):
    """
    calculates origin_responsetime as,
    sum("turnaroundtimemsec")
    where cachestatus == 0 and cacherefreshsrc == 'origin'
    sample output,
    ```
      "origin_response_time": 0,
    ```
    """
    return int(
        dfs.query("cachestatus == 0 and cacherefreshsrc == 'origin'")[
            "turnaroundtimemsec"
        ].sum()
    )