Question: who played shug avery in the color purple
[{'answer': 'Margaret Avery', 'provenance': [{'wikipedia_id': '975102', 'title': 'Margaret Avery', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '975102', 'title': 'Margaret Avery', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 0.9058137522894321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17401269084279517049}, 'section': 'Section::::Abstract.'}]}]