user: Question: Name the commissioned-decommissioned for NVR page of AOR-7
Columns: ['Ship', 'Hull No.', 'Builder', 'Home Port', 'Commissioned– Decommissioned', 'NVR page']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Wichita', 'AOR-1', 'General Dynamics, Quincy', 'Oakland', '1969–1993', 'AOR-1']
SQL:

assistant: SELECT "Commissioned– Decommissioned" FROM "Table" WHERE "NVR page" = 'AOR-7';