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].

Q: Sayfullo Saipov  29  who arrived in the U.S. from Uzbekistan in 2010   entered the plea in U.S. District Court in Manhattan in connection with the Oct. 31 vehicle attack.
After the attack  investigators say  Saipov  told them  he  was inspired by watching Islamic State propaganda videos and that " he  felt good about what  he  had done " NPR's Joel Rose reports.
 His  court-appointed lawyer declined to comment after the hearing.
Days later  President Trump tweeted that  Saipov  "SHOULD GET DEATH PENALTY!" and perhaps be sent to U.S. military's detention center at Guantanamo Bay  Cuba. As The Washington Post has noted  the president's "off-the-cuff remarks seemed to risk complicating matters for federal prosecutors."
After  Saipov 's plea on Tuesday  his court-appointed attorney  David Patton  declined to comment on the case  according to Reuters.
In the attack   Saipov  is alleged to have driven a rented Home Depot pickup onto the bike path along the West Side Highway  mowing down people until the vehicle collided with a school bus. After the crash   he  allegedly jumped out of the truck yelling "God is great" in Arabic.
Even so  authorities reportedly believe  Saipov  was a "lone wolf."
Reuters says Saipov's sister  Umida Saipova  told the news agency in a phone interview earlier this month from Tashkent  Uzbekistan  that she believed her brother had been "brainwashed." Reuters says it also interviewed an Uzbek acquaintance of  Saipov  living in Ohio  Mirrakhmat Muminov  who said that  Saipov  became religious after moving to the United States in 2010.

A: Sayfullo Saipov
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Q: 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.

A: Peter Madsen
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Q: “Your stock market is at an all-time high ”  Trump  told Forbes.com.
"Your jobs  your unemployment is at the lowest point in almost 17 years. We have fantastic numbers coming out "  Trump  said.
And while Forbes told Trump U.S. Stock markets are up 20 percent during his term  he stretches the time period to yield an even glossier figure. "No  25 since the election. You have to go since the election "  Trump  said.
“That depends on the index  of course (he's conveniently using the most  Trump -friendly one  Nasdaq) ” Forbes explained.
"Since Election Day it's 25 percent. It has gone up since Election Day $5.2 trillion -- $5.2 trillion. If Hillary Clinton would have won  the markets would have gone down substantially "  Trump  said.
Aside from stocks   Trump  also is proud of tAmerica's gross domestic product (GDP)  Forbes explained.
"So GDP last quarter was 3.1%. Most of the folks that are in your business  and elsewhere  were saying that would not be hit for a long time. You know  Obama never hit the number "  Trump  said.
"He never hit it on a yearly basis. Never hit it on a yearly basis. That's eight years. I think we'll go substantially higher than that. And I think this quarter would have been phenomenal  except for the hurricanes "  Trump  said.
For  his  part   Trump  has struck a constant tone of optimism over the economy  touting the high stock market and low unemployment.
Stock Market hits an ALL-TIME high! Unemployment lowest in 16 years! Business and manufacturing enthusiasm at highest level in decades! — Donald J. Trump (@realDonaldTrump) October 5  2017
RECORD HIGH FOR S & P 500! — Donald J. Trump (@realDonaldTrump) September 29  2017

A:
Donald J. Trump
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