user: Question: What player has a rounD larger than 6 with a D position.
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/Junior/Club Team (League)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2.0, 'Troy Mallette', 'LW', 'Canada', 'Sault Ste. Marie Greyhounds ( OHL )']
SQL:

assistant: SELECT "Player" FROM "Table" WHERE "Round" > 6.0 AND "Position" = 'D';