ผู้ฝึกม้าอันดับหนึ่งชื่ออะไร ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
what is the name of the trainer of the first place horse ?It is not neccessary to use all the tables.
 table_204_13:  id [ number]  "finished" [ text]  "post" [ number]  "horse" [ text]  "jockey" [ text]  "trainer" [ text]  "owner" [ text] 
SELECT "trainer" FROM table_204_13 WHERE "finished" = 1