Question: who is the song tennessee flattop box about
[{'answer': 'a steel stringed acoustic guitar', 'provenance': [{'wikipedia_id': '25940212', 'title': 'Tennessee Flat Top Box', 'start_paragraph_id': 1, 'start_character': 250, 'end_paragraph_id': 1, 'end_character': 282, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25940212', 'title': 'Tennessee Flat Top Box', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 282, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8848105844955976408}, 'section': 'Section::::Abstract.'}]}]