Question: when was the last time womens hockey won gold
[{'answer': '2018', 'provenance': [{'wikipedia_id': '5856737', 'title': 'List of Olympic medalists in ice hockey', 'start_paragraph_id': 4, 'start_character': 428, 'end_paragraph_id': 4, 'end_character': 432, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]