user: Question: What league is from the United States and a round smaller than 12.
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 "College/Junior/Club Team (League)" FROM "Table" WHERE "Nationality" = 'United States' AND "Round" < 12.0;