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 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.
Example Output: Peter Madsen

Example Input: Tanner Roark  will take the mound with the Nationals facing elimination in Game 4. (Jeff Roberson/AP)
CHICAGO —  Tanner Roark  was born and raised in Wilmington  Ill.  which is southwest of Chicago  which means  he  grew up closer to Comiskey Park than to Wrigley Field. But geography didn’t impact baseball team allegiances in the  Roark  household.  He  grew up a die-hard Cubs fan like  his  mother and siblings  diverging from  his  father’s loyalty to the White Sox and the Cardinals.
“Growing up  yeah  there was always some trash-talking in the house between us and my dad ”  Roark  said.
On Tuesday  barring rain   Roark  will find himself on the mound at Wrigley Field  the ballpark he visited countless times as a fan  to face the Cubs. It won’t be his first start there; he has four on his résumé and appeared in another game out of the bullpen. But none of the previous outings carried the same weight Tuesday’s will place on Roark’s right arm: Game 4 of the National League Division Series with his Nationals facing elimination.
“It’s pretty surreal to pitch in Wrigley  and just the history that they have here and everything ”  Roark  said. “It’s very exciting  and I’m anxious to get out there.”
 Roark  hasn’t pitched since the Nationals’ regular season finale on Oct. 1  when  he  allowed two runs in an inning of relief against the Pirates  and  he  hasn’t started a game since Sept. 27.  He  lasted 4 2/3 innings that day  surrendering six runs on seven hits to the Phillies. But  Roark  was significantly better before the poor finish;  he  had posted a 3.39 ERA in 57 innings over  his  previous nine starts to rebound from an inconsistent four months after  his  stint with Team USA at the World Baseball Classic made for an unusual spring training.
“ Tanner  didn’t have many innings coming out of spring training  and that kind of got  him  behind the eight-ball  so to speak  because you know   he  didn’t have the innings ” Nationals Manager Dusty Baker said. “ He  was with the WBC and  he  didn’t pitch very much. And so things get in your head when you’re used to getting guys out and all of a sudden you’re not getting them out. So it’s a new season now for Tanner  brand-new season  and this is what people are going to remember you by.”
“ Tanner   you know  is a guy that you would like on your side if you’re in an alley and you’re in a fight  because you know  Tanner    he  has that warrior mentality ” Baker said. “ He  doesn’t make any excuses or alibis.  He  just goes out and pitches  and  this guy  has not had an easy road  you know  from the beginning to get here. We feel very comfortable with  Tanner  on the mound because you know  he ’s going to fight tooth and nail and do everything  he  can to win the ballgame for you.”
 Roark  recalled 300 people from Wilmington congregated in a section in right center field for  his  Wrigley Field debut in 2013.  He  doesn’t expect that again Tuesday.  He  hasn’t been hounded for tickets. Five relatives   his  wife  and their two children will be in attendance to watch  his  biggest game of  his  career.
“They are good about getting their own tickets ”  Roark  said  laughing. “Which is very good on  me . It’s a lot less stress that I have to worry about.”
Example Output: Tanner Roark

Example Input: Republican Sen. Marco Rubio was put on the defensive Wednesday by angry students  teachers  and parents who are demanding stronger gun-control measures after the shooting rampage that claimed 17 lives at a Florida high school.
One of those confronting the Florida senator at a CNN's "Stand Up" town hall Wednesday night was Fred Guttenberg  whose 14-year-old daughter Jaime was killed on Feb. 14 with 16 others.  Rubio  was the lone Republican at the nationally broadcast gathering after Florida's GOP Gov. Rick Scott and President Donald Trump declined invitations to appear at the event in Sunrise  Florida.
Guttenberg told  Rubio  that his comments about the shooting "and those of your president this week have been pathetically weak."
People stood up and cheered Guttenberg as he challenged  Rubio  to tell him the truth  to acknowledge that "guns were the factor in the hunting of our kids."
 Rubio  responded that the problems laid bare by the shooting rampage "cannot be solved by gun laws alone " drawing jeering whistles from the crowd.  Rubio  responded that  he  would support laws barring those 18 and under from buying such weapons  support changing the background checks system and getting rid of bump stocks.
Example Output:
Marco Rubio