human
Schema:
storm (Storm_ID, Name, Dates_active, Max_speed, Damage_millions_USD, Number_Deaths)
region (Region_id, Region_code, Region_name)
affected_region (Region_id, Storm_ID, Number_city_affected)
Please answer with SQL.
assistant
Sure, I understand.
human
Show me all the affected regions.
assistant
SELECT region.region_name FROM region JOIN affected_region ON affected_region.region_id = region.region_id ;