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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 load_boston_multitask():
 """Boston House Prices Dataset with a synthetic multitask output. The multitask output is obtained by applying a linear transformation to the original y and adding it as a second output column. """

    dataset = datasets.load_boston()
    y = dataset.target
    target = np.column_stack([y, 2 * y + 5])
    return Dataset(load_boston.__doc__, dataset.data, target, r2_score)