How Google Sets Works

A tool from Google that is often overlooked is Google Sets, which allows you to “automatically create sets of items from a few examples.”
Google Sets was one of the first applications in the Google Labs pages.
Those pages are “Google’s Technology Playground,” and contain a number programs that may or may not be tomorrow’s useful applications from the search engine. As Google tells us, Google labs showcases a few of our favorite ideas that aren’t quite ready for prime time. Your feedback can help us improve them. Please play with these prototypes and send your comments directly to the Googlers who developed them.

Google was granted a patent this week on the process behind Google Sets, and the patent document provides some details on how the program finds additional words based on “items from a set of things” that you enter.
I haven’t used Google Sets much in the past, but now that I have a sense of how it works, I might use it more often.
Since the program allows you to enter a number of items that might be members of a set, I decided to type in the names of 4 cities in Delaware:Newark, Dover, Wilmington and Georgetown