Question: who wrote the music and lyrics for mary poppins
[{'answer': 'The Sherman Brothers', 'provenance': [{'wikipedia_id': '399469', 'title': 'Sherman Brothers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '399469', 'title': 'Sherman Brothers', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 307, 'bleu_score': 0.7853912971986621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4590432745684052945}, 'section': 'Section::::Abstract.'}]}]