Question: when did the song country roads come out
[{'answer': 'April 12 , 1971', 'provenance': [{'wikipedia_id': '1028511', 'title': 'Take Me Home, Country Roads', 'start_paragraph_id': 1, 'start_character': 229, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1028511', 'title': 'Take Me Home, Country Roads', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 675, 'bleu_score': 0.886506331713747, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7140213146402962805}, 'section': 'Section::::Abstract.'}]}]