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: NBC will broadcast the Ceremonies again in prime time tonight  at 8 p.m. Eastern. This version will have commentary from hosts Katie Couric  who was tapped to place Matt Lauer after his firing  and Mike Tirico  who replaced  Bob Costas  as NBC’s prime-time host after a nearly three-decade run.
Tirico made his prime-time debut Thursday night. The Washington Post’s Rick Maese caught up with him before the Games to learn more about his new high-profile assignment. “I think trying to be  Bob  would be stupid. And that was one of  his  bits of advice: Be yourself ” Tirico said. “So I’m going to try to do that.” For the full Q&A  scroll down to the “Olympics Corner” section of this newsletter.
For 11 straight Summer and Winter Games — dating back to 1992 —  Bob Costas  served as the familiar and reliable face of the Olympics. But  Costas  is sitting out the PyeongChang Games and has passed the torch to Tirico  who will serve as NBC’s prime-time host  starting with Friday’s Opening Ceremonies. Tirico joined the network in 2016 after more than two decades at ESPN and was a daytime host of the Rio Games. He recently spoke with The Washington Post’s Rick Maese about his new high-profile assignment.
Q: It’s not like you’re a newcomer to this broadcasting game  but did you seek out  Costas  for any advice?
A: There’s been a longtime friendship there. I don’t think that’s overstating it. And I can’t imagine this job changing hands more smoothly.  Bob  has been unbelievable in making  himself  available  if I have any questions. I know I can pick up the phone during the Games  and if I have a question  I know I’ll get an honest answer.  Bob ’s the all-time best.  Bob  set a standard for the amount of times  he  did this and the way  he  did it that likely won’t be matched ever again. So I’m not replacing  him ; I’m following  him . I think trying to be  Bob  would be stupid. And that was one of  his  bits of advice: Be yourself. So I’m going to try to do that.
 Bob Costas  served as NBC’s prime time host for 11 straight Olympics  but has passed the torch to Mike Tirico for the PyeongChang Games. (Courtesy photo/NBC Sports)
A: The best piece of advice that I got from  Bob  and from Al [Michaels] before the Rio Games working daytime: You don’t have to know everything about everyone. It’s impossible. The experts at each sport have that covered. In the host role  you just need to have the overriding story lines. I’m trying to get to the top of the surface. It’s like one of those fancy Starbucks drinks — you do want to get some of the coffee  but you want to make sure you get all foam. But how has my life changed? I’m sitting in my office right now. Two years ago  I certainly would be watching a replay of a Big Ten or an NBA game from the night before. And right now I’m watching the women’s skeleton competition from Germany. And it’s the fourth different Olympic event that I’ve watched since I’ve been up this morning.
Example Output: Bob Costas

Example Input: Taylor Swift  seen on the streets of Manhattan on September 7  2016 in New York City.
 Taylor Swift  seen on the streets of Manhattan on September 7  2016 in New York City. James DevaneyâGC Images
 Taylor Swift  might just have met  her  biggest fan yet â and pulled off one of  her  biggest surprises while  she  was at it.
Lara didnât seem to hear her  continuing to express her gratitude to  Swift   crying through tears to say: âI have to say thank you for everything  youâve actually made my life so much better.â
Example Output: Taylor Swift

Example Input: Representatives of President Bashar al-Assad's government -- who have trooped through many of Geneva's fine hotels -- have never even met face-to-face with Syria's opposition.
Yes  we have been here before. But this time it feels different. Russia is calling almost all the shots  making an outcome in  Assad 's favor much closer.
Indeed  the opposition has in the past insisted  Assad  must go almost as a precondition for talks rather than an outcome of the peace process itself. And where Obama supported this position  Trump is reversing from it.
In late October  US Secretary of State Rex Tillerson said: "The only thing that changed is when this administration came into office  we took a view that it is not a prerequisite that  Assad  go before that process starts; rather  the mechanism by which  Assad  departs will likely emerge from that process."
But as we approach this latest round of talks   Assad  seemed to be leveraging Trump's implicit support  delaying  his  delegation's arrival at the talks  pushing back against opposition demands  he  needs to go early in the talks process and not be part of a transitional government.
As the US bows out   Assad  appears empowered and the UN mediator weakened. On the eve of talks  he  issued a statement demanding no preconditions from either side.
Russia and the US agree to do all they can to reach a compromise -- Russia with  Assad ; the US with the opposition.
Yet each time talks collapse because  Assad 's forces ratchet up their offensives and sieges.
The opposition  not unreasonably  says it can't negotiate while its people are being starved and killed. Mediators call for pauses in the talks that can drag out for months. The pause then only ends when  Assad  wins whatever battle  he 'd used to stall the talks.
On the eve of these talks  Eastern Ghouta -- a suburb of Damascus -- is in the headlines. It is the latest pocket of opposition  Assad  is trying to extinguish. International observers will be watching carefully  albeit with no clout to change the dynamic  should  he  use the cover of these talks to accelerate attacks here.
Each time has  Assad  crashed the talks previously  Russia -- rather than convince  him  to stop -- has helped provide cover for  him .
That was Obama's understanding with Putin. The US believed Russia would do as it said it would -- namely  telling  Assad  to stop fighting -- and negotiate in good faith. It never happened.
When finally Russia did vote for UN Security Council Resolution 2254   calling for a political  not military solution and setting a time frame and process for  Assad  to end the war and transition from power  it seemed impossible the Russians could weasel out of their obligations again. Yet they did.
For any democratic leader  victory at the cost Syria has paid -- hundreds of thousands dead  more than half the population displaced  and close to 5 million refugees forced to flee the country -- would be pyrrhic in the extreme. But not for  Assad  and  his  ally Vladimir Putin.
How different things are now. As parties get ready to arrive in Geneva  Putin recently held a meeting with all the key powers in the region and beyond  which was notable for  Assad 's presence outside Syria for the first time in seven years.
That a man as paranoid as  Assad  could be lured from his safe Damascus lair is an indication of the influence Putin holds over him.
Example Output:
Bashar al-Assad