context: How to clean a popcorn machine
Cool the unit.
Before cleaning, allow the unit to cool entirely with all components in place. The unit should be allowed to cool on its own.
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next sentence for the context: Do not introduce water or other agents to help cool the machine. Unplug the machine while allowing it to cool.

context: How to use a manual typewriter
Slide the margin set on the right-hand side of the typewriter.
Before you start typing, you'll want to make sure that your margins are set correctly. The right-hand margin set is usually located next to the larger carriage release lever at the top right of the typewriter.
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next sentence for the context: The margin sets usually look like metal brackets at the very top of the typewriter. They may have a button you have to press before you can move them.

context: How to save trees
Learn how trees affect your home.
Aside from desert regions, most areas benefit from having plenty of large, shady trees in every neighborhood. They improve air quality, reduce erosion and absorb noise.
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next sentence for the context: Big trees protect cities from getting too hot by cooling the environment through shade and evaporation. Without trees, urban areas experience what's called a heat island effect, with streets and buildings retaining heat and forcing people to use extra power to cool their homes.

context: A large group of people are seen sitting in the water looking around. another group
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next sentence for the context:
are seen kite surfing along the water.