def METHOD_NAME(f, data):
    """Writes a single data point into three multipart records."""
    length = len(data)
    stride = int(length / 3)
    data_start = data[0:stride]
    data_middle = data[stride : 2 * stride]
    data_end = data[2 * stride :]
    write_recordio(f, data_start, 1)
    write_recordio(f, data_middle, 2)
    write_recordio(f, data_end, 3)