Who had an evening gown score of 9.78?
{'header': ['Country', 'Interview', 'Swimsuit', 'Evening Gown', 'Average'], 'page_title': 'Miss Teen USA 1998', 'section_title': 'Scores', 'caption': 'Scores', 'rows': [['South Carolina', '9.83', '9.96', '9.89', '9.89'], ['Virginia', '9.59', '9.87', '9.74', '9.73'], ['Nevada', '9.41', '9.83', '9.48', '9.57'], ['Tennessee', '9.13', '9.88', '9.66', '9.56'], ['Wyoming', '9.13', '9.74', '9.71', '9.53'], ['Texas', '9.16', '9.52', '9.82', '9.50'], ['Florida', '8.94', '9.72', '9.74', '9.47'], ['Illinois', '8.91', '9.62', '9.78', '9.44'], ['Mississippi', '8.96', '9.55', '9.76', '9.42']]}