Question: who played frank in seven brides for seven brothers
[{'answer': 'Tommy Rall', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 26, 'start_character': 90, 'end_paragraph_id': 26, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}, {'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 55, 'bleu_score': 0.7860753021519781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1986935460843640820}, 'section': 'Section::::Cast.\n'}]}]