Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Example Input: `` Tropical '' refers to the geographical origin of these systems , which form almost exclusively over tropical seas . `` Cyclone '' refers to their winds moving in a circle , whirling round their central clear eye , with their winds blowing counterclockwise in the Northern Hemisphere and blowing clockwise in the Southern Hemisphere . The opposite direction of circulation is due to the Coriolis effect . Tropical cyclones typically form over large bodies of relatively warm water . They derive their energy through the evaporation of water from the ocean surface , which ultimately recondenses into clouds and rain when moist air rises and cools to saturation . This energy source differs from that of mid-latitude cyclonic storms , such as nor'easters and European windstorms , which are fueled primarily by horizontal temperature contrasts . Tropical cyclones are typically between 100 and 2,000 km ( 62 and 1,243 mi ) in diameter .
Example Output: Tropical cyclone

Example Input: Raviv Ullman ( Hebrew : רביב אולמן ‎ ; born January 24 , 1986 ) , is an Israeli - American actor and musician . He is best known for playing Phil Diffy , the main character in the Disney Channel series Phil of the Future . The actor was credited as Ricky Ullman from 1997 until 2006 .
Example Output: Raviv Ullman

Example Input: Rita Repulsa is a fictional character from the television series Mighty Morphin Power Rangers , and the principal nemesis and archenemy of the main superheroes in the show 's first season . She is portrayed in the first season by Machiko Soga and by Carla Perez in the remaining seasons , while voiced by Barbara Goodson in the series . Soga reprised her role as Rita , now the Mystic Mother , while Susan Brady provided her voice in TV series Power Rangers Mystic Force . In the films , she is portrayed by Julia Cortez in Mighty Morphin Power Rangers : The Movie , and by Elizabeth Banks in the 2017 reboot film . Rita Repulsa is based on the Kyōryū Sentai Zyuranger villain Witch Bandora .
Example Output:
Rita Repulsa