Nature, birdsong, frogs:
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The frog makes sounds
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Carburetor tractor drives by
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Work, shutdown, Elevator, start
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Swamp at night, the sounds of the environment
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A herd of horned animals runs
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The tractor drives slowly
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The tractor starts, expects to jam
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Nature, water splash, birds
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Mooing cows
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The tractor starts, moves, jamming
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Shutdown, start, work, Stables cleaner
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Farm hay feeder, start, work, shutdown
★★★★★