บัลแกเรียได้รับเหรียญทองแดงกี่เหรียญ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many bronze medals did Bulgaria receive?It is not neccessary to use all the tables.
 table_39255:  "Rank" [ text]  "Nation" [ text]  "Gold" [ real]  "Silver" [ real]  "Bronze" [ real]  "Total" [ real] 
SELECT "Bronze" FROM table_39255 WHERE "Nation" = 'bulgaria'