Keighley Cougars ให้ตัวเลขจำนวนเท่าใดหากแพ้?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many numbers are given for losses by the Keighley Cougars?It is not neccessary to use all the tables.
 table_13015539_1:  lost [ VARCHAR]  club [ VARCHAR] 
SELECT COUNT(lost) FROM table_13015539_1 WHERE club = "Keighley Cougars"