Question: who played the brothers in seven brides for seven brothers
[{'answer': 'Howard Keel', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 66, 'start_character': 1157, 'end_paragraph_id': 66, 'end_character': 1168, 'bleu_score': 1.0, 'section': 'Section::::Reception.\n'}]}, {'answer': 'Jeff Richards', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 25, 'start_character': 523, 'end_paragraph_id': 25, 'end_character': 536, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}, {'answer': 'Matt Mattox', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 26, 'start_character': 65, 'end_paragraph_id': 26, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}, {'answer': 'Marc Platt', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 26, 'start_character': 78, 'end_paragraph_id': 26, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}, {'answer': "Jacques d'Amboise", 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 26, 'start_character': 106, 'end_paragraph_id': 26, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}, {'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'}]}, {'answer': 'Russ Tamblyn', 'provenance': [{'wikipedia_id': '60174', 'title': 'Seven Brides for Seven Brothers', 'start_paragraph_id': 25, 'start_character': 588, 'end_paragraph_id': 25, 'end_character': 600, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Brothers.\n'}]}]