Question: who won wimbledon's men's singles in 1980
[{'answer': 'Björn Borg', 'provenance': [{'wikipedia_id': '27841546', 'title': "1980 Wimbledon Championships – Men's singles final", 'start_paragraph_id': 1, 'start_character': 156, 'end_paragraph_id': 1, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27841546', 'title': "1980 Wimbledon Championships – Men's singles final", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 457, 'bleu_score': 0.843604983621658, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4213243358811772394}, 'section': 'Section::::Abstract.'}]}]