Question: who has the most billboard hits of all time
[{'answer': 'Lionel Richie'}, {'answer': 'Boyz II Men', 'provenance': [{'wikipedia_id': '2654171', 'title': 'List of Billboard Hot 100 chart achievements and milestones', 'start_paragraph_id': 186, 'start_character': 399, 'end_paragraph_id': 186, 'end_character': 410, 'bleu_score': 1.0, 'section': 'Section::::Artist achievements.:Most number-one singles.\n'}]}, {'answer': 'Bee Gees', 'provenance': [{'wikipedia_id': '2654171', 'title': 'List of Billboard Hot 100 chart achievements and milestones', 'start_paragraph_id': 257, 'start_character': 12, 'end_paragraph_id': 257, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Artist achievements.:Simultaneously occupying the top two or more positions.\n'}]}, {'answer': 'Paul McCartney', 'provenance': [{'wikipedia_id': '2654171', 'title': 'List of Billboard Hot 100 chart achievements and milestones', 'start_paragraph_id': 186, 'start_character': 461, 'end_paragraph_id': 186, 'end_character': 475, 'bleu_score': 1.0, 'section': 'Section::::Artist achievements.:Most number-one singles.\n'}]}]