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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(self, hdf5):
 """Loads the intermediate state of the bootstrapping from file."""

    positives = set(hdf5.get("PositiveIndices"))
    negatives = set(hdf5.get("NegativeIndices"))
    hdf5.cd("Model")
    model = bob.learn.boosting.BoostedMachine(hdf5)
    return model, positives, negatives