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:
Kim Yo Jong  the younger sister of North Korean leader Kim Jong Un  arrived in South Korea with the North Korean delegation on Feb. 9 for the Winter Olympics. (Reuters)
Those on their feet included South Korean President Moon Jae-in and the two senior North Koreans sent to the Opening Ceremonies — Kim Yo Jong  the sister of leader Kim Jong Un  and Kim Yong Nam  North Korea’s official head of state.
Moon warmly greeted  Kim Yo Jong  at Friday’s ceremony.  He  will host  her  and the other senior North Korean officials for lunch on Saturday.
 Choe and Kim Yo Jong  also are both under direct American sanctions for human rights abuses related to  their  roles in censoring information in North Korea.

Ex Output:
Kim Yo Jong


Ex Input:
Rep. Barbara Comstock (R-Va.)  described incidents of sexual harassment in Congress at a House Administration Committee hearing on Nov. 14  including one perpetrated by an unnamed "member who is here now "  she  said. (House Administration Committee)
 Rep. Barbara Comstock (R-Va.)  described incidents of sexual harassment in Congress at a House Administration Committee hearing on Nov. 14  including one perpetrated by an unnamed "member who is here now "  she  said. (House Administration Committee)
âThis is about a member  who is here now. I donât know who it is  but somebody who I trust told me this situation â  Rep. Barbara Comstock (R-Va.)  said at the hearing on sexual harassment.
The male member tricked a young female staffer into meeting him at his residence   Comstock  said. When the staffer arrived  he greeted  her  in a towel  then exposed himself   she  said. The staffer left the house and subsequently quit  her  Hill job   she  said.

Ex Output:
Barbara Comstock


Ex Input:
When constructing a dystopia  it takes some doing to be both Orwellian and Huxleyan at the same time. But with the changes he just announced to the Facebook News Feed   Mark Zuckerberg  seems to have managed this extraordinary feat.
In his ongoing effort to "improve" Facebook   Zuckerberg  is now trying both tactics.  He 's reducing your access to real news â in the 20th century  we used to call that censorship â while increasing the likelihood that you'll only see the outrageous fake news posted by your crazy uncle. Because hey  content posted by family makes you happy  and we only want you to be happy  right?
The Facebook that  Zuckerberg  now seems to be envisioning will do the same. People present their best selves on the service; they post carefully curated photos of their "perfect" vacations. And now they will be able to do so without any of that nasty news intruding!
"The research shows that when we use social media to connect with people we care about  it can be good for our well-being  " Zuckerberg  wrote.  He  forgot to mention the research that shows Facebook actually makes you more depressed when you're looking at other people's vacation snaps or pictures of their perfect babies.
Now  Zuckerberg  wants us to stay in that mental state without the horrid intrusion of "passive experience" â  his  words for what happens when you're reading or watching anything that makes you sit and think  rather than mindlessly typing "congratulations!"
The worst of it is   Zuck  thinks  he 's being noble.  He  literally thinks  he 's "doing the right thing."  He  wants  his  infant children to look back one day and say that Facebook saved the world.

Ex Output:

Mark Zuckerberg