Question: who played the little boy in mary poppins
[{'answer': 'Matthew Adam Garber', 'provenance': [{'wikipedia_id': '1082015', 'title': 'Matthew Garber', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1082015', 'title': 'Matthew Garber', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 285, 'bleu_score': 0.696105252727215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15154798237566075342}, 'section': 'Section::::Abstract.'}]}]