Any test case for chef and Semiprimes(snackdown 2018) ??

I m getting wrong answer after submitting any testcase with output that will not pass for the following code.


def answer(val,semiPrimes):
       currentIndex = 0
       while(currentIndex<len(semiPrimes)):
              if((val-semiPrimes[currentIndex]) in semiPrimes):
                     return "Yes"
              else:
                     currentIndex=currentIndex+1

       return "NO"
 
//