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].

Ex Input:
MURDEROUS  thin-skinned and in possession of nuclear weapons  the North Korean dictator   Kim Jong Un   has one good deed to  his  name:  he  has united America and China. Max Baucus  Americaâs ambassador to Beijing until January 2017  recalls the Chinese president  Xi Jinping  privately expressing âdisgustâ at Mr Kimâs reckless pursuit of nukes and missiles to carry them to other continents. Mr Xiâs frustration with North Koreaâs hereditary despot stands out as âthe strongest statement that I have ever heard Xi makeâ  says Mr Baucus. China has never sounded as closely aligned with America when it comes to using sanctions and diplomatic pressure  in a last-ditch bid to change how Mr Kim calculates his regimeâs interests.
Unfortunately for relations between the worldâs two biggest economies  China will hate the next steps that America is likely to take on North Korea. Evan Medeiros  until 2015 the senior director for Asia in Barack Obamaâs National Security Council  says that when the Chinese accuse America of refusing to engage in talks with the regime  this is largely âposturingâ. But behind it lies a truth  that âsanctions wonât stop North Koreaâ. When battling the proliferation of the deadliest weapons  sanctions are always in a race with technology  says Mr Medeiros  now with the Eurasia Group  a consultancy. âKim Jong Un is close to grasping the brass ring. We have probably lost the race and need to think about deterrence.â This could include deploying new missiles and missile-defence systems in South Korea and Japan  and perhaps another aircraft-carrier in the region.
Still  cold-war theories of deterrence are being dusted off  with such jargon as âsecond-strike capabilityââthe certainty that a country attacked with nuclear weapons can retaliate massively. Douglas Paal  a senior Asia hand in the Reagan White House and both Bush administrations  approves of the Senate plan to place more interceptors in Alaska  in part to gain leverage over China. âWe need to layer up more missile defence. China needs to see that their second-strike capacity is really deteriorating  which hurts them.â Mr Paal  who runs the Asia programme at the Carnegie Endowment for International Peace  a think-tank  is in frequent contact with envoys of governments including Chinaâs and  recently  North Koreaâs. He concedes the need for talks with the  Kim  regime  alongside containment and deterrence  but notes that in previous negotiations  North Korea wanted an end to American defence alliances in Asia and to Americaâs troop presence in South Korea: âSo we canât get there.â
A policy of containment would not just strain relations with China as new American weapons bristled in Asia. Global non-proliferation regimes would be tested  not least because a North Korea facing crippling sanctions might see selling nuclear technology as a lifeline. Perhaps Chinaâs greatest nightmare involves Japan feeling compelled to build nuclear weapons (it could quickly develop the technology). A Chinese build-up of warheads in response could result in India and then Pakistan increasing their stockpiles. The unity fostered by  Mr Kim  may thus prove short-lived. If  he  builds the arsenal  he  wants  China and America will be sincere in their shared dismay. But if America then prepares to contain him  a whole new Sino-American stand-off may begin.

Ex Output:
Kim Jong Un


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LIMA (Reuters) -  Peruvian President Pedro Pablo Kuczynski ’s political troubles will likely continue despite  his  surprise victory over a bid in Congress to oust  him  this week  a key opposition leader said on Saturday  citing ongoing graft probes and opposing demands from allies.
 Kuczynski   on the other hand  could see the cross-party alliance that defended  him  this week evaporate going forward  said Chlimper. “I don’t see how  he  can come out stronger ”  he  said.
Chlimper said  Kuczynski  lured the rebel Popular Force lawmakers with a promise to free their movement’s political leader  Fujimori  from prison - an accusation denied by  Kuczynski ’s government.
 Kuczynski  would lose the support of Fujimori’s left-leaning foes if  he  makes good on the deal to secure the elder Fujimori’s release  said Chlimper.

Ex Output:
Pedro Pablo Kuczynski


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Democrats Barack Obama  Bill Clinton and Jimmy Carter and Republicans George H.W. and  George W. Bush  gathered in College Station  Texas  home of Texas A&M University  to try to unite the country after the storms.
Texas A&M is home to the presidential library of  the elder Bush . At 93  he has a form of Parkinson’s disease and appeared in a wheelchair at the event. His wife  Barbara  and George W. Bush’s wife  Laura  were in the audience.
“This wonderful effort reminds  us  that  we  truly are one nation under God  all unified by  our  values and devotion to one another ” Trump said in the greeting  played during the concert.
Four of the five former presidents — Obama   George W. Bush   Carter and Clinton — made brief remarks that did not mention Trump.  The elder Bush  did not speak but smiled and waved to the crowd.  They  appealed for national unity to help those hurt by the hurricanes.
The last time the five were together was in 2013  when Obama was still in office  at the dedication of  George W. Bush’s  presidential library in Dallas.
There is precedent for former presidents joining forces for post-disaster fundraising.  George H.W. Bush  and Bill Clinton raised money together after the 2004 South Asia tsunami and Hurricane Katrina the next year. Clinton and  George W. Bush  combined to seek donations after Haiti’s 2011 earthquake.
Hurricane Harvey slammed into Texas and Louisiana Gulf Coast as a Category 4 hurricane on Aug. 25  unleashing historic flooding in Houston and killing more than 80 people. Shortly thereafter  all five ex-presidents appeared in a commercial for a fundraising effort known as “One America Appeal.” In it   George W. Bush  says  “People are hurting down here.”  His  father  George H.W. Bush  then replies  “We love you  Texas.”

Ex Output:

George W. Bush