If an image includes three zebras standing in a row and gazing forward, with a fourth zebra behind them.
return zebras ;return #1 standing in  a  row ;return #2 that are gazing forward ;return number of  #3 ;return if  #4 is three ;return #1 behind #3 ;return number of  #6 ;return if  #7 is one ;return if  both  #5 and #8
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