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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _unpack_data(data):
 """ Break Xs, Ys, and metadata out into separate lists for data preprocessing. Run basic data validation. """

    xs = [None] * len(data)
    ys = [None] * len(data)
    metadata = [None] * len(data)
    for idx, example in enumerate(data):
        if isinstance(example, (list, tuple)):
            xs[idx], ys[idx], metadata[idx] = _unpack_list(example)
        if isinstance(example, dict):
            xs[idx], ys[idx], metadata[idx] = _unpack_dict(example)

    return xs, ys, metadata