Question: when did ipswich town win the uefa cup
[{'answer': '1980 -- 81'}, {'provenance': [{'wikipedia_id': '352843', 'title': 'Ipswich Town F.C.', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 415, 'bleu_score': 0.62786792946212, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11793491733639524531}, 'section': 'Section::::Abstract.'}]}]