Question: who wrote the song ruby sung by kenny rogers
[{'answer': 'Mel Tillis', 'provenance': [{'wikipedia_id': '1945628', 'title': "Ruby, Don't Take Your Love to Town", 'start_paragraph_id': 1, 'start_character': 58, 'end_paragraph_id': 1, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1945628', 'title': "Ruby, Don't Take Your Love to Town", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 676, 'bleu_score': 0.922367381054882, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18060076598585045607}, 'section': 'Section::::Abstract.'}]}]