user: Question: Which is the earliest founded day school to have entered the competition after 1958?
Columns: ['School', 'Location', 'Enrolment', 'Founded', 'Denomination', 'Boys/Girls', 'Day/Boarding', 'Year Entered Competition']
Types: ['text', 'text', 'real', 'real', 'text', 'text', 'text', 'real']
Sample row: ['Brighton Grammar School', 'Brighton', 1121.0, 1882.0, 'Anglican', 'Boys', 'Day', 1958.0]
SQL:

assistant: SELECT MIN("Founded") FROM "Table" WHERE "Day/Boarding" = 'day' AND "Year Entered Competition" > 1958.0;