Question: who plays john in meet me in st louis
[{'answer': 'Tom Drake', 'provenance': [{'wikipedia_id': '74942', 'title': 'Meet Me in St. Louis', 'start_paragraph_id': 1, 'start_character': 455, 'end_paragraph_id': 1, 'end_character': 464, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '74942', 'title': 'Meet Me in St. Louis', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 544, 'bleu_score': 0.9516391630120881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3987294780997196152}, 'section': 'Section::::Plot.\n'}]}]