Question: when did bucks fizz win the eurovision song contest
[{'answer': '1981', 'provenance': [{'wikipedia_id': '1718348', 'title': 'Bucks Fizz', 'start_paragraph_id': 1, 'start_character': 99, 'end_paragraph_id': 1, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1718348', 'title': 'Bucks Fizz', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1107, 'bleu_score': 0.9580807684881931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8822222911795478908}, 'section': 'Section::::Abstract.'}]}]