Question: what's the tallest building in nashville tennessee
[{'answer': 'AT&T Building', 'provenance': [{'wikipedia_id': '12169960', 'title': 'List of tallest buildings in Nashville', 'start_paragraph_id': 1, 'start_character': 177, 'end_paragraph_id': 1, 'end_character': 190, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]