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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 SentenceAnalysis object from a json dictionary."""

        args = {}
        if 'sentence_id' in _dict:
            args['sentence_id'] = _dict.get('sentence_id')
        else:
            raise ValueError(
                'Required property \'sentence_id\' not present in SentenceAnalysis JSON'
            )
        if 'text' in _dict:
            args['text'] = _dict.get('text')
        else:
            raise ValueError(
                'Required property \'text\' not present in SentenceAnalysis JSON'
            )
        if 'tones' in _dict:
            args['tones'] = [
                ToneScore._from_dict(x) for x in (_dict.get('tones'))
            ]
        if 'tone_categories' in _dict:
            args['tone_categories'] = [
                ToneCategory._from_dict(x)
                for x in (_dict.get('tone_categories'))
            ]
        if 'input_from' in _dict:
            args['input_from'] = _dict.get('input_from')
        if 'input_to' in _dict:
            args['input_to'] = _dict.get('input_to')
        return cls(**args)