CREATE TABLE table_name_40 (event VARCHAR, rank_points VARCHAR, total VARCHAR)
SELECT event FROM table_name_40 WHERE rank_points = "8" AND total = "20"
เหตุการณ์ใดมี 8 คะแนนเป็นคะแนนรวม 20 คะแนน?
What event has 8 as the rank points, with 20 as the total?