user: Question: What is Current Branch Opened, when Branch is Midland Library?
Columns: ['Branch', 'Address', 'Neighborhood', 'First branch opened', 'Current branch opened']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Albina Library', '3605 N.E. 15th Avenue', 'Irvington', 1906.0, 1999.0]
SQL:

assistant: SELECT "Current branch opened" FROM "Table" WHERE "Branch" = 'Midland Library';