Question: how many acres is the great smoky mountains national park
[{'answer': '522,419 acres'}, {'provenance': [{'wikipedia_id': '365553', 'title': 'Great Smoky Mountains National Park', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 432, 'bleu_score': 0.645271142287657, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 234365337272126055}, 'section': 'Section::::Abstract.'}]}]