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_86 (launch_site VARCHAR, satellite VARCHAR, date VARCHAR, rocket VARCHAR)

### Question ###
What is the launch site of the delta iv rocket with an unknown date and a gps iif-10 satellite?

### Accurate SQL ###

SELECT launch_site FROM table_name_86 WHERE date = "unknown" AND rocket = "delta iv" AND satellite = "gps iif-10"