Task: Text to Code
Input (English): SQL: SELECT Headquartered_City FROM district WHERE District_name = "Blackville"
Feedback: Looking for the name of store mentioned in store table.
Output (English): SELECT t3.headquartered_city FROM store AS t1 JOIN store_district AS t2 ON t1.store_id  =  t2.store_id JOIN district AS t3 ON t2.district_id  =  t3.district_id WHERE t1.store_name  =  "Blackville"