Question: who starred in 1949 death of a salesman
[{'answer': 'Mildred Dunnock as Linda', 'provenance': [{'wikipedia_id': '156620', 'title': 'Death of a Salesman', 'start_paragraph_id': 55, 'start_character': 246, 'end_paragraph_id': 55, 'end_character': 270, 'bleu_score': 1.0, 'section': 'Section::::Productions.\n'}]}, {'answer': 'Arthur Kennedy as Biff', 'provenance': [{'wikipedia_id': '156620', 'title': 'Death of a Salesman', 'start_paragraph_id': 55, 'start_character': 272, 'end_paragraph_id': 55, 'end_character': 294, 'bleu_score': 1.0, 'section': 'Section::::Productions.\n'}]}, {'answer': 'Howard Smith as Charley', 'provenance': [{'wikipedia_id': '156620', 'title': 'Death of a Salesman', 'start_paragraph_id': 55, 'start_character': 296, 'end_paragraph_id': 55, 'end_character': 319, 'bleu_score': 1.0, 'section': 'Section::::Productions.\n'}]}, {'answer': 'Cameron Mitchell as Happy', 'provenance': [{'wikipedia_id': '156620', 'title': 'Death of a Salesman', 'start_paragraph_id': 55, 'start_character': 324, 'end_paragraph_id': 55, 'end_character': 349, 'bleu_score': 1.0, 'section': 'Section::::Productions.\n'}]}, {'answer': 'Lee J. Cobb as Willy Loman'}, {'provenance': [{'wikipedia_id': '156620', 'title': 'Death of a Salesman', 'start_paragraph_id': 55, 'start_character': 0, 'end_paragraph_id': 55, 'end_character': 934, 'bleu_score': 0.9868845362499331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10731999686564767008}, 'section': 'Section::::Productions.\n'}]}]