Question: who sang with prince on diamonds and pearls
[{'answer': 'NPG member Rosie Gaines', 'provenance': [{'wikipedia_id': '2378652', 'title': 'Diamonds and Pearls (song)', 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 238, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2378652', 'title': 'Diamonds and Pearls (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 550, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8699999689569623242}, 'section': 'Section::::Abstract.'}]}]