Task: Question Generation
Input (English): #1 return the  2010 census 
#2 return non-family of #1 
#3 return children under 18 living with them of #1 
#4 return percentage of #2 
#5 return percentage of #3 
#6 return which is the  lowest of #4 ,  #5
Output (English): Which had the smallest percentage in the 2010 census:non-family or children under 18 living with them?