If one image shows at least four zebras running forward, and the other image shows at least two zebras running leftward.
return one image  ;return zebras in  #1 ;return #2 that are running  forward ;return number of  #3 ;return if  #4 is at least four ;return the  other image  ;return zebras in  #6 ;return #7 that are running  leftward ;return number of  #8 ;return if  #9 is at least two ;return if  both  #5 and #10 are true
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