Task: Question Generation
Input (English): #1 return Staff 
#2 return #1 held the  title Sales Person 
#3 return #1 held the  title Clerical Staff 
#4 return #2 besides  #3 
#5 return names of  #4 
#6 return genders of  #4 
#7 return #5 ,  #6
Output (English): What are the names and genders of staff who have held the title Sales Person, but never Clerical Staff?