Written prose tends to follow a specific rythm and rhyme scheme. Also, written prose usually has sentence structure that differs from casual speech in order to fit that rythm and rhyme.
Well, some people collect rocks, so you could write:
I have collected rocks from San Francisco, Washington, D.C., and Boston.
What has been the greatest accomplishment that you have made?
The Dead Sea, being under sea level naturally, has a negative elevation of 1,312 feet.
