user: Question: how many overall championships does Concordia University have
Columns: ['School', 'Mascot', 'Conference', 'National Titles', 'Founded']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Bellevue University', 'Bellevue Bruins', 'Midlands', 14.0, 1966.0]
SQL:

assistant: SELECT "National Titles" FROM "Table" WHERE "School" = 'Concordia University';