Read the passage from “The Story of an Eyewitness.”
At nine o’clock Wednesday evening I walked down through the very heart of the city. I walked through miles and miles of magnificent buildings and towering skyscrapers. Here was no fire. All was in perfect order. The police patrolled the streets. Every building had its watchman at the door. And yet it was doomed, all of it. There was no water. The dynamite was giving out. And at right angles two different conflagrations were sweeping down upon it.
At one o’clock in the morning I walked down through the same section. Everything still stood intact. There was no fire. And yet there was a change. A rain of ashes was falling. The watchmen at the doors were gone. The police had been withdrawn. There were no firemen, no fire-engines, no men fighting with dynamite.
What is the organizational structure of this passage?