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: The home-made submarine "UC3 Nautilus"  built by Danish inventor Peter Madsen  who is charged with killing Swedish journalist Kim Wall in his submarine  sails in the harbour of Copenhagen  Denmark  August 10  2017. REUTERS/Peter Thompson
 Wall  a freelance journalist who was researching a story on submarine owner Peter Madsen   went missing after  he  took  her  out to sea in the 17-metre (56-foot) submarine in August.
On Aug. 23  police identified a headless female torso that washed ashore in Copenhagen as that of Wall. In October  police said they had recovered  her  head and legs.
 Madsen  admitted to dismembering Wall on board  his  submarine and dumping  her  body parts in the sea  but  he  still denies murdering  her  and a charge of sexual assault without intercourse.

Answer: Peter Madsen


Question: And with a mangled racket and plenty of kicking and screaming  including a couple of arguments with the chair umpire  then a postmatch parting shot at a line judge Safin called "a little bit too blind."
 Safin used to rant about disliking tennis on grass  and he once complained about the high price and low quality of food at the players' restaurant at the All England Club. Well  he doesn't have to worry about any of that again after bowing out in his final Wimbledon with a 6-2  3-6  7-6 (4)  6-4 loss to Levine.
 After confirming this would be his last appearance at the grass-court Grand Slam tournament -- Safin has vowed to retire at season's end -- he was asked how he feels about being done with Wimbledon.
 He's a former No. 1 player who won the 2000 U.S. Open and 2005 Australian Open  but a series of injuries slowed him recently. Still  Safin came to Wimbledon ranked 24th and seeded 14th  and had to be considered quite a favorite against Levine  who never had defeated anyone ranked better than 67th.
Safin has vowed to retire at season's end -- he was asked how he feels about being done with Wimbledon.
 He's a former No. 1 player who won the 2000 U.S. Open and 2005 Australian Open  but a series of injuries slowed him recently. Still  Safin came to Wimbledon ranked 24th and seeded 14th  and had to be considered quite a favorite against Levine  who never had defeated anyone ranked better than 67th.
 "He's an amazing player  and I'm still kind of feeling weird right now that I just beat Safin  because I've always watched him play on TV " said Levine  who turned pro in 2007. "I just kind of went out there with nothing to lose and played some good tennis."
 Levine was a teen when Safin burst onto the scene as a brash  big-hitting 20-year-old who knocked off Sampras to win the U.S. Open.
 "I really had to ... focus on playing against the ball and not worrying about  'Oh  wow  I'm playing against Marat Safin on the other side of the court '" Levine said. "Because then things could have gotten a lot more interesting."
 As is his wont  Safin made things interesting enough. In the early going  he broke his racket by spiking it on the court.
 Leading 4-3 in the third-set tiebreaker  Safin hit a shot near a line that was ruled out. Afterward  Safin said: "Thanks for the guy who made the call. I want to say hello to him. Too bad that he was a little bit too blind."
 In the fourth set  Safin told the chair umpire he could check for chalk on the ball to confirm a call. Rebuffed  Safin added: "So all players are stupid?"
 Safin reached at least the semifinals at all four majors  including at Wimbledon last year  but he has been criticized for not living up to the potential stored in his 6-foot-4 (1.93-meter) frame -- about 7 inches (18 centimeters) taller than Levine.
 "In the history of tennis  everybody's an underachiever " Safin said. "Agassi should have been winning  I don't know  15 Grand Slams. Sampras should have been winning 20 Grand Slams. Federer should be winning -- already should have 25."
 "I should probably have (won) a couple of more " he said  "but I'm pretty satisfied with what I did."

Answer: Marat Safin


Question: The answer to that seemingly unimportant question is suddenly a key element of the deepening scandal surrounding the campaignâs contacts with Russia  following revelations that one member of the team  George Papadopoulos  communicated with Russians connected to the Kremlin. White House Press Secretary Sarah Huckabee Sanders has said several times that the answer is one  implying that the foreign policy council was an unimportant body and  Papadopoulos  was a minor player in the campaign.
 Papadopoulos  admitted to special counsel Robert Muellerâs investigative team that  he  had ongoing contacts with Kremlin intermediaries during the campaign. The White House quickly downplayed the significance of the revelation last week  claiming that  Papadopoulos  was barely involved with the campaign. The campaign was certainly aware of  his  connections to Russia because  Papadopoulos  suggested using them to set up a meeting between Donald Trump and Russian President Vladimir Putin at a March 2016 meeting of the foreign policy team with Trump present. But  Sanders  has emphasized that that was itâthat the campaignâs foreign policy team  a group of volunteer advisers headed by now-Attorney General Jeff Sessions  met only that one time.
âIâm telling you that  he  was a volunteer member of an advisory council that literally met one time â  Sanders  said during a press briefing on October 30.
But on Thursday  Page told the House Intelligence Committee that  he  spoke to Sessions at a dinner in Washington  DC  in June 2016 about an upcoming trip  he  was making to Russia. According to CNN  the dinner was a gathering of members of the foreign policy council. âA source familiar with the meeting told CNN that the encounter occurred at a dinner at the Capitol Hill Club  attended by members of the Trump national security team  including Sessions â the network reported. âNear the end of the dinner  Page approached Sessions to say hello and thanked the then-senator for the dinner  and Page also mentioned  he  was headed to Russia. Sessions didnât respond and moved on to the next person waiting to shake  his  hand  this source said.â

Answer:
George Papadopoulos