How many teams named argentina?
{'header': ['Nation', 'Winners', 'Runners-up', 'Third Place', 'Fourth Place'], 'page_title': 'FIBA Americas League', 'section_title': 'By country', 'caption': 'By country', 'rows': [['Argentina', '3', '2', '1', '1'], ['Brazil', '2', '0', '0', '4'], ['Mexico', '1', '2', '2', '1'], ['Puerto Rico', '0', '1', '1', '0'], ['Venezuela', '0', '1', '0', '0'], ['United States', '0', '0', '1', '0']]}