user: Question: What round was the player ty lawson with a pick earlier than 18?
Columns: ['Year', 'Round', 'Pick', 'Player', 'NBA Club']
Types: ['real', 'real', 'real', 'text', 'text']
Sample row: [2007.0, 1.0, 8.0, 'Brandan Wright', 'Golden State Warriors']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Player" = 'ty lawson' AND "Pick" < 18.0;