Chris Maddocks แข่งขันในระยะ 35,000 ม. วันไหน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What day did Chris Maddocks compete in the 35000 m?It is not neccessary to use all the tables.
 table_name_83:  date [ VARCHAR]  athlete [ VARCHAR]  event [ VARCHAR] 
SELECT date FROM table_name_83 WHERE athlete = "chris maddocks" AND event = "35000 m"