Question: what is the tallest building in baltimore city
[{'answer': 'Transamerica Tower', 'provenance': [{'wikipedia_id': '18033138', 'title': 'List of tallest buildings in Baltimore', 'start_paragraph_id': 1, 'start_character': 177, 'end_paragraph_id': 1, 'end_character': 195, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]