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_2801185_2 (former_county VARCHAR, district VARCHAR)

### Question ###
What are the former counties of the Great Grimsby district?

### Accurate SQL ###

SELECT former_county FROM table_2801185_2 WHERE district = "Great Grimsby"