Question: when do the 2018 olympics start and end
[{'answer': '9 and 25 February 2018', 'provenance': [{'wikipedia_id': '961505', 'title': '2018 Winter Olympics', 'start_paragraph_id': 1, 'start_character': 190, 'end_paragraph_id': 1, 'end_character': 212, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '961505', 'title': '2018 Winter Olympics', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 370, 'bleu_score': 0.756624397115442, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11977908219732172540}, 'section': 'Section::::Abstract.'}]}]