Question: who had the most uk hits in the 80s
[{'answer': 'Madonna', 'provenance': [{'wikipedia_id': '1148583', 'title': 'List of UK Singles Chart number ones of the 1980s', 'start_paragraph_id': 2, 'start_character': 122, 'end_paragraph_id': 2, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1148583', 'title': 'List of UK Singles Chart number ones of the 1980s', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 667, 'bleu_score': 0.9829771687435411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12967880288314603446}, 'section': 'Section::::By artist.\n'}]}]