user: Question: What is the total of events when the tournament was u.s. open and the Top-25 was less than 1?
Columns: ['Tournament', 'Wins', 'Top-10', 'Top-25', 'Events', 'Cuts made']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Masters Tournament', 0.0, 0.0, 0.0, 0.0, 0.0]
SQL:

assistant: SELECT SUM("Events") FROM "Table" WHERE "Tournament" = 'u.s. open' AND "Top-25" < 1.0;