What is the smallest city area?
CREATE TABLE table_18425346_2 (city_area_km_2__ INTEGER)
SELECT MIN(city_area_km_2__) FROM table_18425346_2
### Context: CREATE TABLE table_18425346_2 (city_area_km_2__ INTEGER) ### Question: What is the smallest city area? ### Answer: SELECT MIN(city_area_km_2__) FROM table_18425346_2