Question: where is the final of the champions league 2018
[{'answer': 'NSC Olimpiyskiy Stadium', 'provenance': [{'wikipedia_id': '51615375', 'title': '2018 UEFA Champions League Final', 'start_paragraph_id': 1, 'start_character': 289, 'end_paragraph_id': 1, 'end_character': 312, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Kiev , Ukraine', 'provenance': [{'wikipedia_id': '51615375', 'title': '2018 UEFA Champions League Final', 'start_paragraph_id': 1, 'start_character': 316, 'end_paragraph_id': 1, 'end_character': 332, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51615375', 'title': '2018 UEFA Champions League Final', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 491, 'bleu_score': 0.9361374222844411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 896817152198926774}, 'section': 'Section::::Abstract.'}]}]