Question: who is considered to be the most significant r&b performer during the 1950s
[{'answer': 'Little Richard', 'provenance': [{'wikipedia_id': '24281645', 'title': '1950s in music', 'start_paragraph_id': 8, 'start_character': 96, 'end_paragraph_id': 8, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::The U.S..:Rock and roll.\n'}]}, {'provenance': [{'wikipedia_id': '24281645', 'title': '1950s in music', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 584, 'bleu_score': 0.9461462299376011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6361255996644493584}, 'section': 'Section::::The U.S..:R&B.\n'}]}]