I was walking down an alley, and when I got to the end of the alley, I jumped up and over the wall. When I landed on my feet on the other side I realized I had entered a lush garden with grass, flowers, bushes and trees. The pathway was made of brick, and there were pools and fountains here and there among the vegetation.
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I walked around a little bit, and, looking down into one of the pools, I noticed it was quite deep. I stepped up onto the brick border around the pool, then leaped in, feet first. As I suspected, I sunk down pretty far. I swam around a bit, then came up for a breath. When I did, I was quite surprised.
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The beautiful garden was gone. In its place was a factory, with giant machines all around. There were also huge vats sunk into the concrete floor. The vats were made of a thick glass, and I could see a short way into each vat from inside one of the vats, which is where I was. I propped myself up on the side of the vat I was in, and lifted myself out of the vat.
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Stumbling along the sidewalk 