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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 from_dict(cls, d):
 """ Returns a SlabEntry by reading in an dictionary """


        structure = SlabEntry.from_dict(d["structure"])
        energy = SlabEntry.from_dict(d["energy"])
        miller_index = d["miller_index"]
        label = d["label"]
        coverage = d["coverage"]
        adsorbates = d["adsorbates"]
        clean_entry = d["clean_entry"] = self.clean_entry

        return SlabEntry(structure, energy, miller_index, label=label,
                         coverage=coverage, adsorbates=adsorbates,
                         clean_entry=clean_entry)