Question: when did the us men's hockey team last win a gold medal
[{'answer': '1980', 'provenance': [{'wikipedia_id': '945923', 'title': "United States men's national ice hockey team", 'start_paragraph_id': 2, 'start_character': 45, 'end_paragraph_id': 2, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]