question: Are the objects all metallic and Yellow?
#1 return objects 
#2 return #1 that Are metallic 
#3 return #1 that Are Yellow 
#4 return #1 in both #2 and  #3 
#5 return number of  #1 
#6 return number of  #4 
#7 return if #5 is  equal to  #6