user: Question: What is the sum of Round, when Nationality is "United States", and when Pick is "125"?
Columns: ['Round', 'Pick', 'Player', 'Nationality', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [2.0, 42.0, 'Willie White', 'United States', 'Tennessee-Chattanooga']
SQL:

assistant: SELECT SUM("Round") FROM "Table" WHERE "Nationality" = 'United States' AND "Pick" = 125.0;