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].
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Question: More than 30 000 brain scientists are in Washington  D.C.  this week attending the Society for Neuroscience meeting. One of the hot topics this year is mental disorders such as depression and schizophrenia and autism.  NPR science correspondent Jon Hamilton  has just come from the meeting to talk about some of what  he 's been seeing and hearing. Hi  John. Thanks for coming.
 JON HAMILTON   BYLINE: Hi.
 HAMILTON : Twenty years ago  I'd say it didn't contribute much  but things are really changing. And I was really surprised. I was going through the abstracts to this year's meeting  and there were nearly a thousand papers that mentioned depression. There were 500 that mentioned schizophrenia or autism. And just this morning  there was this study on how - looking at the brain tissue of people with obsessive compulsive disorder and how it's different.
MARTIN: That's NPR's science correspondent Jon Hamilton. Jon  thanks so much.

Answer: Jon Hamilton


Question: A self-portrait of 43rd President George W. Bush . 
-LRB- Provided by George W. Bush Presidential Center -RRB- . 
As part of the 9th annual Freedom Conference & Festival , a conservative confab taking place in Steamboat Springs next month , the paintings of 43rd President George W. Bush will be on display for attendees at the Steamboat Grand Hotel . 
"This is the first time the -LRB- Bush -RRB- exhibit has been shown in Colorado , giving state residents a unique opportunity to view this popular collection ," wrote Jackson Shedelbower , of the Steamboat Institute , in an email . 
The one-day exhibition on Friday , Aug. 25 , organized by the Steamboat Institute , marks the Colorado debut of Bush 's work from "The Art of Leadership : A President 's Personal Diplomacy" exhibition , which features paintings of world leaders Bush met during his tenure in the White House including Vladimir Putin , Angela Merkel , Hamid Karzai , Ellen Johnson Sirleaf and Tony Blair . 
Although some balked at the idea of Bush as a fine artist when he took up painting in his post-presidential retirement , the 71-year-old has stuck to his guns and humbly worked to improve his art . 
"Portraits of Courage : A Commander in Chief 's Tribute to America 's Warriors ," a book of Bush 's paintings of wounded U.S. military veterans that was published in February , netted surprisingly favorable reviews from critics and topped The Washington Post 's best-selling books list earlier this year . 
"-LRB- Bush -RRB- was really putting himself out there and taking a personal risk with these paintings , not knowing what people would think of them ," said Jennifer Schubert-Akin , CEO of the free-market , nonprofit Steamboat Institute . 
Bush will personalize a copy of the book that is being auctioned on the Steamboat Institute 's fundraiser as part of its $ 75-per-person Red , White & Blue Bash fundraiser on July 20 , Schubert-Akin said , with bidding starting at $ 300 . 
A portrait of 41st President George Bush by his son , 43rd President George W. Bush . 
-LRB- Provided by the George W. Bush Presidential Center -RRB- .

Answer: George W Bush


Question: Taylor Swiftâs lawyers  are trying to shake off claims that the âShake It Offâ singer stole lyrics with a new court motion.
 Swift  was sued in September by songwriters Sean Hall and Nathan Butler  who created the song âPlayas Gonâ Playâ for the girl group 3LW in 2001. The duo claimed that  Swift  stole their lyrics and used them in her famous hit single âShake It Off.â
On Wednesday  the singerâs lawyers asked the federal judge to dismiss the copyright lawsuit against  Swift  and argued that the concepts of players playing and haters hating are common music phrases and âpublic domain clichÃ©sâ that canât be claimed as copyright  according to Variety.
 Swift  used the familiar phrase in the chorus of her song which says  âPlayers gonna play  play  play  play  play  and haters gonna hate  hate  hate  hate  hate.â
âThere can be no copyright protection in âplayas  they gonna play and haters  they gonna hate â because it would impermissibly monopolize the idea that players will play and haters will hate â  Swift âs lawyers said. âPlaintiffsâ claim to being the only ones in the world who can refer to players playing and haters hating is frivolousâ¦ Providing a copyright monopoly in the phrase would prevent others from sharing the idea that players play and haters hate.â
To further prove their argument   Swift âs legal team went on to cite other examples of famous songs that use the âplayerâ and âhaterâ phrase such as âDreamsâ by Fleetwood Mac  in which the song says  âPlayers only love you when theyâre playing â and âPlaya Hater â by the Notorious B.I.G.  where the phrase âplaya  playa haterâ is used as the part of the songâs chorus.

Answer:
Taylor Swift