Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Sightings of aliens and UFOs have been reported to police in Cambridgeshire six times in two years, new figures show.

'UFO and alien' sightings revealed by Cambridgeshire Police