def get_stride_sequence(stride_desc):
    """
    Return the sequence of the secondary structure.

    Parameters
    ----------
    stride_desc : list of (str, str, float, float, float)
        The Stride description.

    Returns
    -------
    sequence : list of str
        The secondary structure sequence.
    """
    sequence = []
    for sd in stride_desc:
        sequence.append(sd[1])
    return sequence