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: Itâs always the anniversary of something or other. In November  we have the Russian Revolution and the Balfour Declaration  and this week marks the 500th year since  Martin Luther  challenged the Catholic Church with  his  95 theses. Given the loopy Zeitgeist of our times  I should rush into the street and mark the occasion by defacing Protestant churches with the customary red paint of protest. Luther  after all  was more than the creator of Protestantism. He was also a rotten anti-Semite.
But does  Luther  also deserve a splash of red? The evidence is pretty shocking  not to mention definitive. In 1543   he  published âOn the Jews and Their Lies â in which  he  called my ancestors âbase and whoring peopleâ full of the âdevilâs feces . . . they wallow in like swine.â
 He  had all sorts of ideas for what to do with the Jews  including the wholesale liquidation of their synagogues  even homes  and a ban on the teaching of their rabbis âon pain of loss of life and limb.â
To be sure  Lutherâs Jew-hatred was typical for the time  but  Luther himself  was hardly typical.  He  was a powerful  colloquial writer  and  his  words surely had some effect.  He  was the founder of a church  or a movement  that now numbers nearly 1 billion.
But more pertinently   he  provided a religious imprimatur to German anti-Semitism  which culminated in the Holocaust.  Luther  was often cited by the Nazis  but it would be wrong to blame  him  alone for the murder of 6 million souls.
As far as Iâm concerned   Luther  is a flawed figure. I can appreciate â even applaud â  his  reforms  but they mean little to  me . Nevertheless  I spare  him  the red paint because I know  his  Jew-hatred is hugely negligible compared with the Reformation  he  initiated and  not insignificantly  the role  he  played in encouraging literacy.  He  wrote in German  not Latin  and like the Hebrews  he  so despised   he  interposed no one between man and God. One had to read the Bible.
I pick and choose  my symbolic can of red paint always at the ready. But when it comes to those Confederate generals  they unambiguously stand for slavery  racism and the vile nostalgia for the so-called Lost Cause that prompted the erection of so many memorials. I cherish my Bach  feel bully about T.R. and acknowledge the immense importance of Martin Luther. He did more good than bad.
Example Output: Martin Luther

Example Input: Given his background  how did  Devin Kelley  get a gun?
 Kelley  previously served in the U.S. Air Force  but was discharged in 2014  an Air Force spokesperson confirmed to Fox News on Monday.
 He  was court-martialed in 2012 for assaulting  his  wife and child.  He  was then sentenced to 12 months in custody before being given a bad conduct discharge.
A 1968 Gun Control Act made it unlawful for a licensed firearms dealer to sell a weapon to any person who is given a dishonorable discharge. But because  Kelley  was discharged on bad conduct  the law was not triggered  Adam Winkler  a professor of law and a specialist in American constitutional law at the University of California at Los Angeles  told Fox News on Monday.
 Kelley  purchased two firearms from two separate Academy Sports + Outdoors stores in San Antonio in 2016 and 2017  respectively  the sporting goods store confirmed to Fox News in a statement on Monday. One of the purchases was allegedly a Ruger model AR-556 rifle.
However   Kelley âs domestic violence charges shouldâve been enough to prevent  him  from purchasing a gun  Winkler said -- but the Air Force most likely didnât report this information to the federal background check system  thus allowing the purchase to go forward.
And Winklerâs prediction was right: The Air Force announced late Monday night that the Holloman Air Force Base Office of Special Investigations -- the base where  Kelley  was stationed -- failed to report  Kelley âs domestic violence conviction to the FBIâs Criminal Justice Investigation Services Division for inclusion in the National Criminal Information Center database. The database is used to conduct background checks on those who want to purchase a gun.
The âbiggest mystery â Winkler said  is how  Kelley  was denied a handgun permit but was allowed to purchase a gun from the sporting goods store. But this information is currently unclear.
Additionally  Texas authorities confirmed Monday that  Kelley  did not have a license to carry. However   he  did have a private security license -- often used by armed and unarmed security guards  personal protection officers  private investigators  and more  according to the Texas Department of Public Safety.
Example Output: Devin Kelley

Example Input: Two impersonators of President Trump and North Korean dictator Kim Jong Un were booted from the Winter Olympics Opening Ceremony on Friday for causing confusion among spectators.
According to Reuters  "people dressed up as U.S. President Donald Trump and North Korean leader Kim Jong Un caused a commotion when they appeared in the stands at the Olympic Games Opening Ceremony on Friday before swiftly being shown out by security staff."
"Weâre getting along great â said the  Kim  lookalike.
Unity and peace was the theme at this year's opening ceremony  with both North and South Korea entering the arena under one flag. American Vice President Mike Pence and  Kim âs sister  Kim Yo Jong  watched from a VIP box.
âIs my sister getting the same treatment?â the  Kim  lookalike said upon being escorted out.
According to Time   Kim 's sister appeared to greet South Korean Moon Jae-in and his wife with smiles in the VIP spectating box.
"As South Korean President Moon Jae-in and his wife greeted VIPs in their dignitary box to watch the opening ceremony  they turned to shake hands with North Korean leader Kim Jong Unâs younger sister  who arrived earlier in the day on an unprecedented visit to the South by a member of the Northâs ruling  Kim  family " reports Time. "All broke out in broad smiles."
Example Output:
Kim Jong Un