user: Question: What year did the San Agustin Gym open?
Columns: ['Arena/Venue', 'Home Campus', 'Location', 'Province/Region', 'Maximum Seating Capacity', 'Year Opened']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Blue Eagle Gym', 'Ateneo de Manila University', 'Quezon City', 'Metro Manila', '7,500', '1949']
SQL:

assistant: SELECT "Year Opened" FROM "Table" WHERE "Arena/Venue" = 'San Agustin Gym';