Question: who was the original singer of gentle on my mind
[{'answer': 'John Hartford', 'provenance': [{'wikipedia_id': '584419', 'title': 'Gentle on My Mind (song)', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '584419', 'title': 'Gentle on My Mind (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 383, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15308160767492159442}, 'section': 'Section::::Abstract.'}]}]