<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 async def create_sentinel(sentinels, *, db=None, password=None, encoding=None, minsize=1, maxsize=10, ssl=None, timeout=0.2, loop=None):
 """Creates Redis Sentinel client. `sentinels` is a list of sentinel nodes. """


    if loop is None:
        loop = asyncio.get_event_loop()

    pool = await create_sentinel_pool(sentinels,
                                      db=db,
                                      password=password,
                                      encoding=encoding,
                                      minsize=minsize,
                                      maxsize=maxsize,
                                      ssl=ssl,
                                      timeout=timeout,
                                      loop=loop)
    return RedisSentinel(pool)