Complex sentence: The Coyame UFO incident was a reported mid-air collision between a UFO and a small airplane said to have taken place on August 25,1974 near the town of Coyame, Chihuahua, close to the U.S.-Mexico border.
Split into simpler sentences: The Coyame UFO incident was a reported mid-air collision between a UFO and a small airplane. The incident is said to have taken place on August 25,1974 near the town of Coyame, Chihuahua, close to the U.S.-Mexico border.