What position did the player who scored 4 extra points play?
{'header': ['Player', 'Position', 'Starter', 'Touchdowns', 'Extra points', 'Field goals', 'Points'], 'page_title': '1901 Michigan Wolverines football team', 'section_title': 'Rose Bowl: Michigan 49, Stanford 0', 'caption': 'Rose Bowl: Michigan 49, Stanford 0', 'rows': [['Snow', 'Fullback', 'Yes', '5', '0', '0', '25'], ['Redden', 'Left end', 'Yes', '2', '0', '0', '10'], ['Sweeley', 'Right end', 'Yes', '0', '0', '1', '5'], ['Herrnstein', 'Right halfback', 'Yes', '1', '0', '0', '5'], ['Shorts', 'Right guard', 'Yes', '0', '4', '0', '4']]}