user: Question: What is the total Founded with a Main Campus Location of liberal?
Columns: ['Institution', 'Main Campus Location', 'Founded', 'Mascot', 'School Colors']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Barton Community College', 'Great Bend', 1969.0, 'Cougars', 'Blue & Gold']
SQL:

assistant: SELECT SUM("Founded") FROM "Table" WHERE "Main Campus Location" = 'liberal';