When 20 is the rank and north west is the region/province what is the county?
CREATE TABLE table_23248420_1 (
    county VARCHAR,
    region_province VARCHAR,
    rank VARCHAR
)
SELECT county FROM table_23248420_1 WHERE region_province = "North West" AND rank = 20
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: When 20 is the rank and north west is the region/province what is the county? ### Input: CREATE TABLE table_23248420_1 (
    county VARCHAR,
    region_province VARCHAR,
    rank VARCHAR
) ### Response: SELECT county FROM table_23248420_1 WHERE region_province = "North West" AND rank = 20