Question: who is the biggest tower in the world
[{'answer': 'The Tokyo Skytree', 'provenance': [{'wikipedia_id': '548182', 'title': 'List of tallest towers', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '548182', 'title': 'List of tallest towers', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 136, 'bleu_score': 0.6058547603272121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14084507606776690708}, 'section': 'Section::::Abstract.'}]}]