Question: what is the population of fort smith arkansas
[{'answer': '87,443'}, {'provenance': [{'wikipedia_id': '107254', 'title': 'Fort Smith, Arkansas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 451, 'bleu_score': 0.9155563471415851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2864341708237224077}, 'section': 'Section::::Abstract.'}]}]