The fact "A lot of UFO sightings take place in Nevada." is illustrated with the story:1. There was a light overhead from some type of aircraft.2. I couldn't identify the aircraft so I labelled it an unidentified flying object.3. Slang for an unidentified flying object is "UFO."4. I asked some people if they had seen any UFOs in Nevada.5. Many people said yes, but I noticed they were trying to sell me UFO merchandise.