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].

Example Input: LONDON (Reuters) -  Harry Potter  is continuing to work  his  magic for publisher Bloomsbury (BLPU.L) 20 years after  his  debut  with special editions of  his  first adventure helping revenue rise 15 percent.
FILE PHOTO: Copies of the book of the play of  Harry Potter  and the Cursed Child parts One and Two are displayed at a bookstore in London  Britain July 31  2016. REUTERS/Neil Hall/File Photo
Bloomsbury released new editions of J.K. Rowling’s “ Harry Potter  and the Philosopher’s Stone” with covers dedicated to wizarding school Hogwarts’ houses Gryffindor  Slytherin  Hufflepuff and Ravenclaw to mark the anniversary in June.
 Revenue from Harry Potter  grew 40 percent in the period   the company  said on Tuesday  and the young wizard and  his  magical world will feature strongly in the publisher’s assault on the important Christmas market.
“We have a strong second-half list including the illustrated edition of ‘ Harry Potter  and the Prisoner of Azkaban ’ the illustrated edition of ‘Fantastic Beasts and Where to Find Them’ and two major books to accompany the British Library’s  Harry Potter  exhibition ” said Chief Executive Nigel Newton.
FILE PHOTO: A woman holds copies of the book of the play of  Harry Potter  and the Cursed Child parts One and Two at a bookstore in London  Britain July 31  2016. REUTERS/Neil Hall/File Photo
Analyst Steve Liechti at Investec said Bloomsbury’s second-half list looked strong  with cookery titles from Paul Hollywood  Tom Kerridge and Hugh Fearnley-Whittingstall as well as the new Harry Potter editions.
Example Output: Harry Potter

Example Input: Media playback is unsupported on your device Media caption  Katie Snooks  posted videos online of  her  skin's transformation with a new treatment
Lorde said some people simply assume  her  skin is unclean.
"'Do you wash your face?' It's like  yes  I wash my face  I'm just genetically cursed "  she  said.
 The singer  added that  she  believes it can get better.
Example Output: Katie Snooks

Example Input: 12/19/17 12:43:36 PM -- San Francisco  CA  U.S.A --  Golden State Warriors head coach Steve Kerr  shows around their new home  Chase Center. -- Photo by Kyle Terada-USA TODAY Sports Images  Gannett ORG XMIT: US 136858 Chase Center 12/19/2017 (Photo: Kyle Terada  USA TODAY Sports Images)
 SAN FRANCISCO â Steve Kerr  was surrounded by experts on a recent visit to the Chase Center construction site  engineers and foremen alike who have spent the past year building the $1 billion arena that will open for the 2019-20 NBA season and serve as the X-factor to the Golden State Warriorsâ financial future.
12/19/17 1:05:38 PM -- San Francisco  CA  U.S.A --  Golden State Warriors head coach Steve Kerr  stands in  his  office at their new home  Chase Center. -- Photo by Kyle Terada-USA TODAY Sports Images  Gannett ORG XMIT: US 136858 Chase Center 12/19/2017 (Photo: Kyle Terada  USA TODAY Sports Images)
âSan Antonio felt like a huge victory  because the Dome was meant for football and San Antonio desperately needed a basketball arena for the Spurs â  Kerr  told USA TODAY Sports. âChicago was different  because everybody loved the old Chicago Stadium  and the United Center was so huge that it felt more like a concession to modern needs.
Kerr jokes:  Steve Kerr  more concerned about 'breakfast' than Rockets' obsession
 Kerr  will always have a soft spot for Oracle. After all  the arena that is widely seen as one of the best in the NBA was one of the many things that attracted him to the Warriorsâ job in May 2014.
Example Output:
Steve Kerr