Question: who sings don't mess with my man
[{'answer': 'U.S. R&B singer Nivea'}, {'provenance': [{'wikipedia_id': '18673904', 'title': "Don't Mess with My Man (Nivea song)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 347, 'bleu_score': 0.61841298763106, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17028864367776307193}, 'section': 'Section::::Abstract.'}]}]