คลาสไหนที่ adt Champion Racing ครองอันดับ 1 ด้วยแชสซี audi r8 และน้อยกว่า 206 คะแนน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What was the class when adt champion racing ranked 1st with an audi r8 chassis and less than 206 points?It is not neccessary to use all the tables.
 table_name_2:  (class [ VARCHAR ] rank [ VARCHAR ] entrant [ VARCHAR ] points [ VARCHAR ] chassis [ VARCHAR) ]
SELECT class FROM table_name_2 WHERE points < 206 AND chassis = "audi r8" AND entrant = "adt champion racing" AND rank = "1st"