user: Question: Which Position player was born June 30, 1981?
Columns: ['Position', 'Jersey #', 'Name', 'Height (cm)', 'Weight (kg)', 'Birthdate', 'Birthplace', '2005–2006 Team']
Types: ['text', 'real', 'text', 'real', 'real', 'text', 'text', 'text']
Sample row: ['G', 31.0, 'Craig Anderson', 188.0, 79.0, 'May 21, 1981', 'Park Ridge, Illinois', 'Chicago Blackhawks']
SQL:

assistant: SELECT "Position" FROM "Table" WHERE "Birthdate" = 'June 30, 1981';