Question: how tall was the twin towers in meters
[{'answer': '417 m'}, {'answer': '415.1 m'}, {'provenance': [{'wikipedia_id': '45645094', 'title': 'World Trade Center (1973–2001)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 574, 'bleu_score': 0.7572343400269761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12244497704848124178}, 'section': 'Section::::Abstract.'}]}]