Question: who starred in the movie mackenna's gold
[{'answer': 'Gregory Peck', 'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 113, 'end_paragraph_id': 1, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Omar Sharif', 'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 127, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Telly Savalas', 'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 140, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ted Cassidy', 'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 155, 'end_paragraph_id': 1, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Camilla Sparv', 'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '345825', 'title': "Mackenna's Gold", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 329, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15708234567093610863}, 'section': 'Section::::Abstract.'}]}]