How many provinces have evening gown score of 8.49
{'header': ['Province', 'Swimsuit', 'Evening Gown', 'Interview', 'Average'], 'page_title': 'Miss Dominican Republic 2009', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text'], 'id': '1-15081939-4', 'section_title': 'Preliminaries Scores', 'caption': 'Preliminaries Scores', 'rows': [['Monte Plata', '9.51', '9.74', '9.64', '9.630'], ['San José de Ocoa', '9.83', '9.47', '9.29', '9.530'], ['Distrito Nacional', '9.55', '9.11', '9.37', '9.343'], ['Valverde', '9.73', '8.91', '8.56', '9.067'], ['San Cristóbal', '9.05', '8.97', '9.10', '9.040'], ['Santo Domingo Este', '8.99', '8.90', '8.93', '8.940'], ['Santiago', '8.85', '8.25', '9.52', '8.873'], ['Duarte', '8.53', '8.49', '8.81', '8.610'], ['Com. Dom. En Estados Unidos', '8.43', '8.52', '8.50', '8.483'], ['La Vega', '8.82', '8.01', '8.31', '8.380'], ['Peravia', '8.33', '8.39', '8.29', '8.337'], ['Santo Domingo Norte', '7.56', '8.00', '8.97', '8.177'], ['San Pedro de Macorís', '8.10', '8.14', '8.09', '8.110'], ['Hermanas Mirabal', '7.99', '7.91', '7.82', '7.907'], ['Monseñor Nouel', '7.56', '7.84', '7.98', '7.793'], ['Santo Domingo Oeste', '7.60', '7.71', '7.73', '7.680'], ['La Altagracia', '7.66', '7.61', '7.68', '7.650'], ['Barahona', '7.53', '7.73', '7.49', '7.563'], ['Dajabón', '7.49', '7.48', '7.29', '7.420'], ['La Romana', '7.35', '7.39', '7.33', '7.357'], ['Monte Cristi', '7.27', '7.15', '7.16', '7.193']], 'name': 'table_15081939_4'}