Southern College รอบต่ำสุดคือเท่าไร?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is the lowest round for Southern College?It is not neccessary to use all the tables.
 table_name_58:  round [ INTEGER]  college [ VARCHAR] 
SELECT MIN(round) FROM table_name_58 WHERE college = "southern"