Question: who is singing in the background of gold digger
[{'answer': 'Jamie Foxx', 'provenance': [{'wikipedia_id': '2628379', 'title': 'Gold Digger (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ray Charles', 'provenance': [{'wikipedia_id': '2628379', 'title': 'Gold Digger (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 382, 'end_paragraph_id': 1, 'end_character': 393, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2628379', 'title': 'Gold Digger (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 409, 'bleu_score': 0.936655266249045, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2782158952227840109}, 'section': 'Section::::Abstract.'}]}]