Question: who sings my baby wrote me a letter
[{'answer': 'Wayne Carson', 'provenance': [{'wikipedia_id': '4586629', 'title': 'The Letter (The Box Tops song)', 'start_paragraph_id': 1, 'start_character': 34, 'end_paragraph_id': 1, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4586629', 'title': 'The Letter (The Box Tops song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 381, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4672314101384464768}, 'section': 'Section::::Abstract.'}]}]