Question: who did aberdeen beat in the cup winners cup
[{'answer': 'Madrid', 'provenance': [{'wikipedia_id': '14661055', 'title': "1983 European Cup Winners' Cup Final", 'start_paragraph_id': 1, 'start_character': 110, 'end_paragraph_id': 1, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14661055', 'title': "1983 European Cup Winners' Cup Final", 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 415, 'bleu_score': 0.8858751546029151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9808165551637947969}, 'section': 'Section::::Abstract.'}]}]