user: Question: What was the overall pick for Doug Sproule of the United States?
Columns: ['Round', 'Overall', 'Player', 'Nationality', 'Club team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 3.0, 'Radek Bonk', 'Czech Republic', 'Las Vegas Thunder (IHL)']
SQL:

assistant: SELECT "Overall" FROM "Table" WHERE "Nationality" = 'United States' AND "Player" = 'Doug Sproule';