CREATE TABLE department_stores (dept_store_chain_id VARCHAR(255)); CREATE TABLE department_store_chain (dept_store_chain_id VARCHAR(255), dept_store_chain_name VARCHAR(255))
How many department stores does the store chain South have?
    
SQL: SELECT COUNT(*) FROM department_stores AS T1 JOIN department_store_chain AS T2 ON T1.dept_store_chain_id = T2.dept_store_chain_id WHERE T2.dept_store_chain_name = "South"