Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_37189 ( "Ship" text, "Hull No." text, "Builder" text, "Home Port" text, "Commissioned\u2013 Decommissioned" text, "NVR page" text )

### Question ###
Name the commissioned-decommissioned for NVR page of aor-7

### Accurate SQL ###

SELECT "Commissioned\u2013 Decommissioned" FROM table_37189 WHERE "NVR page" = 'aor-7'