Question: who sang the song good time charlie's got the blues
[{'answer': "Danny O'Keefe", 'provenance': [{'wikipedia_id': '31230569', 'title': "Good Time Charlie's Got the Blues", 'start_paragraph_id': 1, 'start_character': 71, 'end_paragraph_id': 1, 'end_character': 84, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31230569', 'title': "Good Time Charlie's Got the Blues", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 0.8781879837907131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18411195623306622216}, 'section': 'Section::::Abstract.'}]}]