You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

The Beatles ' rooftop concert was the final public performance of the English rock band the Beatles . On 30 January 1969 , the band , with keyboardist Billy Preston , surprised a central London office and fashion district with an impromptu concert from the roof of the headquarters of the band 's multimedia corporation Apple Corps at 3 Savile Row . In a 42 - minute set , the Beatles were heard playing nine takes of five songs before the Metropolitan Police Service asked them to reduce the volume . Footage from the performance was later used in the 1970 documentary film Let It Be .

Solution: The Beatles' rooftop concert
Why? 'The answer given is correct because it is an appropriate title as it is the main subject of the passage.

New input: The Sun 's color is white , with a CIE color - space index near ( 0.3 , 0.3 ) , when viewed from space or when the Sun is high in the sky . When measuring all the photons emitted , the Sun is actually emitting more photons in the green portion of the spectrum than any other . When the Sun is low in the sky , atmospheric scattering renders the Sun yellow , red , orange , or magenta . Despite its typical whiteness , most people mentally picture the Sun as yellow ; the reasons for this are the subject of debate . The Sun is a G2V star , with G2 indicating its surface temperature of approximately 5,778 K ( 5,505 C , 9,941 F ) , and V that it , like most stars , is a main - sequence star . The average luminance of the Sun is about 1.88 giga candela per square metre , but as viewed through Earth 's atmosphere , this is lowered to about 1.44 Gcd / m . However , the luminance is not constant across the disk of the Sun ( limb darkening ) .
Solution:
Sun