Question: who won the pittsburgh steeler baltimore raven game
[{'answer': 'Pittsburgh Steelers', 'provenance': [{'wikipedia_id': '21101589', 'title': 'Ravens–Steelers rivalry', 'start_paragraph_id': 1, 'start_character': 109, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]