Question: when is the opening ceremonies for the olympics 2018
[{'answer': 'on 9 February 2018', 'provenance': [{'wikipedia_id': '51310933', 'title': '2018 Winter Olympics opening ceremony', 'start_paragraph_id': 1, 'start_character': 121, 'end_paragraph_id': 1, 'end_character': 139, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'began at 20 : 00 KST and finished at approximately 22 : 20 KST'}, {'provenance': [{'wikipedia_id': '51310933', 'title': '2018 Winter Olympics opening ceremony', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 286, 'bleu_score': 0.822857531485061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14075071644077257739}, 'section': 'Section::::Abstract.'}]}]