question: How many items are not large metalic items or small matte items?
#1 return items 
#2 return metalic items 
#3 return #2 that  are large 
#4 return small items 
#5 return #4 that  are matte 
#6 return number of #1 
#7 return number of #3 
#8 return number of #5 
#9 return sum of #7 and #8 
#10 return difference of #6 and #9