Question: who did liverpool beat in 1981 european cup final
[{'answer': 'Real Madrid', 'provenance': [{'wikipedia_id': '10116832', 'title': '1981 European Cup Final', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10116832', 'title': '1981 European Cup Final', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 471, 'bleu_score': 0.9330252843665561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9054341402399617691}, 'section': 'Section::::Abstract.'}]}]