question: If one of the big cats is running very fast and the others are eating.
#1 return cats 
#2 return #1 that are  big 
#3 return #2 that are  running very fast 
#4 return #2 that are  eating 
#5 return number of #3 
#6 return if  #5 is  equal to one 
#7 return number of #1 
#8 return number of #4 
#9 return the  difference of  #7 and #5 
#10 return if  #8 is  equal to #9 
#11 return if  both  #6 and #10 are  true