user: Question: What is the sum of completions that led to completion percentages of 65.4 and attempts under 451?
Columns: ['Year', 'Comp.', 'Att.', 'Comp%', 'Yards', "TD's", "INT's", 'Rating']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['1993', 2.0, 5.0, 40.0, 26.0, 0.0, 0.0, 57.0]
SQL:

assistant: SELECT SUM("Comp.") FROM "Table" WHERE "Comp%" = 65.4 AND "Att." < 451.0;