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: The survey  offered by public broadcaster ARD  showed Merkel's popularity has plummeted by 10 points to 48 percent -- her worst showing since late 2006.
 Of the 1 000 people surveyed by Infratest dimap this week  58 percent said they thought the previous government of Merkel's conservatives and the center-left Social Democrats would be better than the current coalition Merkel formed in October with the Free Democrats.
's conservatives and the center-left Social Democrats would be better than the current coalition Merkel formed in October with the Free Democrats.
 Merkel has been under pressure for months. Within Germany  critics noted that her new coalition so far has little to show for its efforts in the seven months since it took control  other than the unpopular Greek and euro rescue packages. On the international stage  Merkel has been criticized for dragging her feet on helping Greece.
 The chancellor has already scrapped plans for promised tax cuts  but still faces a huge federal budget deficit. Her government is to decide on spending cuts and  possibly  even on tax hikes within the next 10 days.
 Only 34 percent said Merkel's government has made the right decisions to counter the crisis.
 The one member of Merkel's Cabinet who enjoys steady support is Defense Minister Karl-Theodor zu Guttenberg  with 61 percent of those surveyed applauding his work.
Example Output: Angela Merkel

Example Input: Story highlights  Kim  raises possibility of North Korean athletes in Winter Olympics in South Korea
(CNN)  North Korean leader Kim Jong Un  has warned the United States that  his  country's nuclear capabilities are now complete and the nuclear launch button is always on  his  desk.
"The entire mainland of the US is within the range of our nuclear weapons and the nuclear button is always on the desk of my office. They should accurately be aware that this is not a threat but a reality " said  Kim  during  his  annual New Year's Day address  according to a CNN translation of the speech.
"No matter how much America wants to attack us with their military might and nuclear power  they know that now we possess such great nuclear power and therefore they will not dare "  Kim  said  adding that  his  country's greatest achievement of 2017 was the "historic accomplishment of completing our nuclear capabilities."
Since coming to power   Kim  has overseen a dramatic increase in the pace of North Korea's missile program. As of February last year  Pyongyang has fired off 23 missiles  improving its technology with each launch. In September  the regime carried out its sixth and most powerful nuclear test.
Euan Graham  director of the International Security Program at the Lowy Institute  told CNN that  Kim 's nuclear button comment is "effectively just noise."
Example Output: Kim Jong Un

Example Input: Last weekend  around 10 plain-clothes police officers escorted Gui Minhai from a train traveling from Chinaâs eastern coastal city of Ningbo to Beijing  his daughter Angela Gui told Hong Kongâs South China Morning Post Monday.
Gui Minhaiâ a naturalized Swedish citizen â was traveling with two Swedish diplomats when he was detained  his daughter said.
In a statement issued to multiple outlets  Swedenâs foreign minister Margot WallstrÃ¶m said that her government had âdetailed knowledgeâ of Gui Minhai âs arrest and had summoned Chinaâs ambassador.
 The 2015 disappearance of Gui Minhai and four other Hong Kong-based publishers and booksellers â who sold books banned on the mainland â provoked consternation in the semi-autonomous territory  where many regarded it as an incursion into Hong Kongâs sovereignty . The five later appeared in Chinese custody and gave statements saying  they  had gone to the mainland voluntarily.
Angela Gui told the New York Times that her father  who China formally released from detention last October  had been living in Nigbo and was required to report regularly to Chinese authorities.  Gui Minhai  was reportedly en route to Beijingâs Swedish Embassy for a medical examination when police boarded the train and ushered him away.
Example Output:
Gui Minhai