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:
Blood urea nitrogen ( BUN ) is a medical test that measures the amount of urea nitrogen found in blood . The liver produces urea in the urea cycle as a waste product of the digestion of protein . Normal human adult blood should contain between 6 and 20 mg of urea nitrogen per 100 ml ( 6 -- 20 mg / dL ) of blood . Individual laboratories will have different reference ranges as the assay used will vary between laboratories .

Ex Output:
Blood urea nitrogen


Ex Input:
`` Rainy Days and Mondays '' is a 1971 song by The Carpenters , with instrumental backing by L.A. session musicians from the Wrecking Crew , that went to number 2 on the Billboard Hot 100 chart and it was the duo 's fourth number 1 song on the Adult Contemporary singles chart . However , the song failed to chart in the United Kingdom until it went to number 63 in a reissue there in 1993 . `` Rainy Days and Mondays '' was certified Gold by the RIAA .

Ex Output:
Rainy Days and Mondays


Ex Input:
The Burning of Washington was a British invasion of Washington , D.C. , the capital of the United States , during the War of 1812 . On August 24 , 1814 , after defeating the Americans at the Battle of Bladensburg , a British force led by Major General Robert Ross occupied Washington and set fire to many public buildings , including the White House ( known as the Presidential Mansion ) , and the Capitol , as well as other facilities of the U.S. government . The attack was in part a retaliation for the recent American destruction of Port Dover in Upper Canada . Throughout the history of the United States , the United Kingdom is the only country to have ever captured Washington , D.C. ; the Burning of Washington also marks the only time since the American Revolutionary War that a foreign power has captured and occupied the United States capital .

Ex Output:

Burning of Washington