Question: who has scored the most goals in the champions league
[{'answer': 'Cristiano Ronaldo'}, {'provenance': [{'wikipedia_id': '27519699', 'title': 'List of European Cup and UEFA Champions League top scorers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 522, 'bleu_score': 0.815357584833944, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16442383566305219209}, 'section': 'Section::::Abstract.'}]}]