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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, _dict):
 """Initialize a AlignedElement object from a json dictionary."""

        args = {}
        if 'element_pair' in _dict:
            args['element_pair'] = [
                ElementPair._from_dict(x) for x in (_dict.get('element_pair'))
            ]
        if 'identical_text' in _dict:
            args['identical_text'] = _dict.get('identical_text')
        if 'provenance_ids' in _dict:
            args['provenance_ids'] = _dict.get('provenance_ids')
        if 'significant_elements' in _dict:
            args['significant_elements'] = _dict.get('significant_elements')
        return cls(**args)