Question: what house rhythm section created the memphis soul sound for stax records
[{'answer': 'Southern soul', 'provenance': [{'wikipedia_id': '325366', 'title': 'Stax Records', 'start_paragraph_id': 2, 'start_character': 40, 'end_paragraph_id': 2, 'end_character': 53, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '325366', 'title': 'Stax Records', 'start_paragraph_id': 2, 'start_character': 21, 'end_paragraph_id': 2, 'end_character': 764, 'bleu_score': 0.6501585926437311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1627155335275424633}, 'section': 'Section::::Abstract.'}]}]