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_name_50 (launched VARCHAR, commissioned VARCHAR)

### Question ###
What is Launched, when Commissioned is "25 July 1998"?

### Accurate SQL ###

SELECT launched FROM table_name_50 WHERE commissioned = "25 july 1998"