Question: when was the last time steelers beat the cowboys
[{'answer': '2008', 'provenance': [{'wikipedia_id': '26565584', 'title': 'Cowboys–Steelers rivalry', 'start_paragraph_id': 32, 'start_character': 436, 'end_paragraph_id': 32, 'end_character': 440, 'bleu_score': 1.0, 'section': 'Section::::History.:1990–present: Return to prominence.\n'}]}, {'provenance': [{'wikipedia_id': '26565584', 'title': 'Cowboys–Steelers rivalry', 'start_paragraph_id': 32, 'start_character': 0, 'end_paragraph_id': 32, 'end_character': 554, 'bleu_score': 0.857020140293373, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 405581227502676976}, 'section': 'Section::::History.:1990–present: Return to prominence.\n'}]}]