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_15118 ( "Year" real, "Division I" text, "Division II" text, "Division III" text, "Division IV" text, "Division V" text )

### Question ###
With a Division II of Portsmouth, what is the Division IV?

### Accurate SQL ###

SELECT "Division IV" FROM table_15118 WHERE "Division III" = 'portsmouth'