Question: who won the uefa champions league 2018 final
[{'answer': 'Real Madrid', 'provenance': [{'wikipedia_id': '51615375', 'title': '2018 UEFA Champions League Final', 'start_paragraph_id': 1, 'start_character': 391, 'end_paragraph_id': 1, 'end_character': 402, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51615375', 'title': '2018 UEFA Champions League Final', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 776, 'bleu_score': 0.8620760680835291, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9540781004547291477}, 'section': 'Section::::Abstract.'}]}]