Cardwell มีประชากรเท่าใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is the population of Cardwell?It is not neccessary to use all the tables.
 table_171236_2:  (population [ INTEGER ] official_name [ VARCHAR) ]
SELECT MIN(population) FROM table_171236_2 WHERE official_name = "Cardwell"