user: Question: What is the position of United States' player Brett Lawrence?
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/Junior/Club Team (League)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Kerry Huffman', 'Defense', 'Canada', 'Guelph Platers ( OHL )']
SQL:

assistant: SELECT "Position" FROM "Table" WHERE "Nationality" = 'United States' AND "Player" = 'Brett Lawrence';