Question: who sang shake it like a polaroid picture
[{'answer': 'André 3000', 'provenance': [{'wikipedia_id': '979343', 'title': 'Hey Ya!', 'start_paragraph_id': 1, 'start_character': 23, 'end_paragraph_id': 1, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]