Task: Question Generation
Input (English): #1 return people 
#2 return ages of  #1 
#3 return #1 where  #2 is  higher than 30 
#4 return jobs of  #1 
#5 return #1 where  #4 is  engineer 
#6 return #1 of  both #3 and #5 
#7 return number of #6
Output (English): How many people whose age is greater 30 and job is engineer?