Question: who sings i'll never let you go
[{'answer': 'Elvis Presley', 'provenance': [{'wikipedia_id': '6840981', 'title': "I'll Never Let You Go", 'start_paragraph_id': 1, 'start_character': 124, 'end_paragraph_id': 1, 'end_character': 137, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6840981', 'title': "I'll Never Let You Go", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 144, 'bleu_score': 0.539404474380147, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5127667422557857393}, 'section': 'Section::::Abstract.'}]}]