Question: who wrote the song that's alright mama
[{'answer': 'Arthur Crudup', 'provenance': [{'wikipedia_id': '1590207', 'title': "That's All Right", 'start_paragraph_id': 1, 'start_character': 83, 'end_paragraph_id': 1, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1590207', 'title': "That's All Right", 'start_paragraph_id': 5, 'start_character': 154, 'end_paragraph_id': 5, 'end_character': 754, 'bleu_score': 0.9004417324370211, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11158148367144703091}, 'section': 'Section::::History.\n'}]}]