Question: what song did bbd sing on fresh prince
[{'answer': 'Gangsta', 'provenance': [{'wikipedia_id': '46699197', 'title': 'Gangsta (Bell Biv DeVoe song)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46699197', 'title': 'Gangsta (Bell Biv DeVoe song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 260, 'bleu_score': 0.9269343237061861, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17577578234170908118}, 'section': 'Section::::Abstract.'}]}]