user: Question: Name the main location for Public and Masters university
Columns: ['School', 'Main location', 'Control', 'Type', 'Enrollment (2005)', 'Founded']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['American College of Healthcare Sciences', 'Portland', 'Private ( for-profit )', 'Health professions school', 1032.0, 1978.0]
SQL:

assistant: SELECT "Main location" FROM "Table" WHERE "Control" = 'Public' AND "Type" = 'Masters university';