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:
Pixel 2 and Pixel 2 XL are Android smartphones designed , developed and marketed by Google . They were announced during a Google event on October 4 , 2017 , as the successors to the Pixel and Pixel XL . They were released on October 19 , 2017 , and serve as the second set of smartphones in the Google Pixel hardware line .

Ex Output:
Pixel 2

Ex Input:
The Surface Book 2 is a 2 - in - 1 PC designed and produced by Microsoft , part of the company 's Surface line of personal computing . It was unveiled on October 17 , 2017 and released on November 16 , 2017 . Starting on November 9 , one week prior to the release date , consumers were able to place a pre-order through Microsoft 's website . It succeeds the Surface Book released in October 2015 .

Ex Output:
Surface Book 2

Ex Input:
Macroeconomics ( from the Greek prefix makro - meaning '' large '' and economics ) is a branch of economics dealing with the performance , structure , behavior , and decision - making of an economy as a whole . This includes national , regional , and global economies . Macroeconomics and microeconomics , a pair of terms coined by Ragnar Frisch , are the two most general fields in economics . In contrast to macroeconomics , microeconomics is the branch of economics that studies the behavior of individuals and firms in making decisions and the interactions among these individuals and firms in narrowly - defined markets .

Ex Output:
Macroeconomics