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:
Originally considered for Gladys Knight & the Pips and later for Diana Ross , as `` I Wanna Be Free '' , `` I Want You Back '' explores the theme of a lover who decides that he was too hasty in dropping his partner . An unusual aspect about `` I Want You Back '' was that its main lead vocal was performed by a tween , Michael Jackson .

Ex Output:
I Want You Back


Ex Input:
The First Battle of Bull Run ( the name used by Union forces ) , also known as the Battle of First Manassas ( the name used by Confederate forces ) , was fought on July 21 , 1861 in Prince William County , Virginia , just north of the city of Manassas and about 25 miles west - southwest of Washington , D.C. It was the first major battle of the American Civil War . The Union 's forces were slow in positioning themselves , allowing Confederate reinforcements time to arrive by rail . Each side had about 18,000 poorly trained and poorly led troops in their first battle . It was a Confederate victory , followed by a disorganized retreat of the Union forces .

Ex Output:
First Battle of Bull Run


Ex Input:
World population has experienced continuous growth since the end of the Great Famine of 1315 -- 17 and the Black Death in 1350 , when it was near 370 million . The highest population growth rates -- global population increases above 1.8 % per year -- occurred between 1955 - 1975 peaking to 2.06 % between 1965 - 1970 . The growth rate has declined to 1.18 % between 2010 - 2015 and is projected to decline to 0.13 % by the year 2100 . Total annual births were highest in the late 1980s at about 139 million , and are now expected to remain essentially constant at their 2011 level of 135 million , while deaths number 56 million per year and are expected to increase to 80 million per year by 2040 . World population reached 7 billion on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau .

Ex Output:

World population