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.

Ex Input:
The `` Super Mario Bros. theme '' , officially known as the `` Ground Theme '' ( 地上 BGM , Chijō BGM , lit . `` Aboveground BGM '' ) or Overworld Theme , is a musical theme originally heard in the first stage of the 1985 Nintendo Entertainment System video game Super Mario Bros ... It was one of six themes composed for the game by Nintendo sound designer Koji Kondo , who found it to be the most difficult track to compose for it . The theme has a calypso rhythm and usually receives a corresponding orchestration in games whose sound synthesizers can imitate steel drums .

Ex Output:
Super Mario Bros. theme


Ex Input:
The Berlin Wall ( German : Berliner Mauer , pronounced ( bɛʁˈliːnɐ ˈmaʊ̯ɐ ) ( listen ) ) was a guarded concrete barrier that physically and ideologically divided Berlin from 1961 to 1989 . Constructed by the German Democratic Republic ( GDR , East Germany ) , starting on 13 August 1961 , the Wall cut off ( by land ) West Berlin from virtually all of surrounding East Germany and East Berlin until government officials opened it in November 1989 . Its demolition officially began on 13 June 1990 and finished in 1992 . The barrier included guard towers placed along large concrete walls , accompanied by a wide area ( later known as the `` death strip '' ) that contained anti-vehicle trenches , `` fakir beds '' and other defenses . The Eastern Bloc portrayed the Wall as protecting its population from fascist elements conspiring to prevent the `` will of the people '' in building a socialist state in East Germany . In practice , the Wall served to prevent the massive emigration and defection that had marked East Germany and the communist Eastern Bloc during the post-World War II period .

Ex Output:
Berlin Wall


Ex Input:
The War on Cancer refers to the effort to find a cure for cancer by increased research to improve the understanding of cancer biology and the development of more effective cancer treatments , such as targeted drug therapies . The aim of such efforts is to eradicate cancer as a major cause of death . The signing of the National Cancer Act of 1971 by United States president Richard Nixon is generally viewed as the beginning of this effort , though it was not described as a `` war '' in the legislation itself .

Ex Output:

War on Cancer