Question: name a city that has hosted winter olympics
[{'answer': 'St. Moritz', 'provenance': [{'wikipedia_id': '11015817', 'title': 'List of Olympic Games host cities', 'start_paragraph_id': 4, 'start_character': 302, 'end_paragraph_id': 4, 'end_character': 312, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11015817', 'title': 'List of Olympic Games host cities', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1256, 'bleu_score': 0.7472244961976791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16298666122132436055}, 'section': 'Section::::Abstract.'}]}]