Once upon a time, there was a woodcutter, who lived in a little house in a beautiful, green wood. Anyone would notice the wood's superlative qualities. One day, the woodcutter was merrily chopping some wood, when he saw a little girl skipping through the woods, whistling happily, followed by a big grey wolf. Deciding it was really none of his business, the woodcutter went back to chopping wood, until he heard a scream! He grabbed his axe and ran towards the noise, where he found that he was too late: the big grey wolf had already eaten the little girl and her granny. The moral of this story is: all it takes for evil to triumph is for good men to do nothing. What part of the plot do the sentences "Once upon a time, there was a woodcutter, who lived in a little house in a beautiful, green wood. Anyone would notice the wood's superlative qualities. " represent?