Question: how much times have real madrid won the champions league
[{'answer': '6', 'provenance': [{'wikipedia_id': '12068089', 'title': 'List of Real Madrid CF seasons', 'start_paragraph_id': 2, 'start_character': 536, 'end_paragraph_id': 2, 'end_character': 537, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]