If one of the big cats is running very fast and the others are eating.
return cats ;return #1 that are  big ;return #2 that are  running very fast ;return #2 that are  eating ;return number of #3 ;return if  #5 is  equal to one ;return number of #1 ;return number of #4 ;return the  difference of  #7 and #5 ;return if  #8 is  equal to #9 ;return if  both  #6 and #10 are  true
['select', 'filter', 'filter', 'filter', 'aggregate', 'boolean', 'aggregate', 'aggregate', 'arithmetic', 'boolean', 'boolean']