Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].

Input: Consider Input: Keith Perkins  got the phone alert and later heard the sirens going off in  his  southeast Alaska hometown of Sitka.
 He  said people on Facebook were chattering back and forth about whether this was real or not and what they should do.
Given the magnitude of the earthquake   Perkins  said  he  thought it best to head to the high school  a tsunami evacuation point  even though in the past  he  felt  his  home was at a "high-enough spot."
"I figured I'd probably just better play it safe "  he  said.
In Seward  at the southern end of Alaska's Kenai Peninsula  residents retreated to higher ground or left on the only road out of the city  fire chief Athey said. He described  it  as a controlled evacuation and compared  it  to folks driving home from a holiday fireworks show.

Output: Keith Perkins


Input: Consider Input: Bitcoin hit a record high of $16 623 per coin on Thursday  December 7. Two years ago  the idea of buying the virtual currency even at that price was laughable. After a rapid rise in value in 2013  the cryptocurrency's value more than halved by mid-2015. At its lowest point  one bitcoin was equal to about $230. Given the currency's covert nature  the average person still may not understand how buying and selling actually works. Using the app Coinbase  which lets anyone trade bitcoins for a small fee  we decided to find out. A brief warning: If you're going to do this  tell your bank you're about to buy bitcoin. More on that later. And to read more about blockchain  the technology powering bitcoin  click here. View As: One Page Slides
This is what the Coinbase app looks like on an iPhone.
However  Coinbase's interface makes it simple to enter the basic personal information it needs to create your account.
The final step before entering my financial information was two-step verification for security  which  Coinbase  quickly sent to my phone.
To sell the bitcoin   Coinbase  only allows users to pair  their  bank account with the app; a credit or debit card won't suffice.
Since  Coinbase  wasn't linked to my bank account  the transaction needs a few days to process before the money is transferred.

Output: Coinbase


Input: Consider Input: Football: Red-carded Wilshere not dirty says Wenger
 Arsene Wenger admitted Jack Wilshere deserved to be sent off at the end of Arsenal's 2-1 victory over Birmingham but insisted the England youngster is not a dirty player.
 Arsenal manager Wenger has been one of the most vocal critics of the nature of some of the challenges and addressed the issue in his programme notes for Birmingham's visit to the Emirates Stadium on Saturday.
 In his notes  Wenger demanded an improvement in the standard of tackling and claimed managers are responsible for the behaviour of their teams.
 The Frenchman's words were quickly put to the test by Wilshere but Wenger is adamant the teenager is not a malicious player.
 "He mistimed his tackle and got a red card he deserved " Wenger said. "But it was his first tackle in the game. You have to acknowledge that he got a red card and deserved it  but he didn't spend the whole game kicking people.
 "He played football and was one of the best players on the pitch. Unfortunately it happened to him. He did not want to hurt the player  but he mistimed his tackle.
 "We are the team who have most fouls committed against us  and I encourage our players to play football. We got a red card and deserved it.


Output: Wenger