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: Actor John Bradley  who plays Sam  Tarly  told TV Guide that characters are going to keep being pushed by new elements and traveling the seven kingdoms deeper and faster than ever before.
"Each of the characters this year is placed in a completely alien environment at some point in the season that they've never been placed in before "  Bradley  said. "The thrill is seeing how they react to it and how they respond... This season  I think  more than any other is stretching these characters."
But  Bradley 's comments are intriguing from a character perspective. An alien environment isn't necessarily a physical place; it's an unfamiliar situation (Arya  no longer sniffing out traitors)  an important task (Cersei trying to play nice with others)  or a new threat (White! Walkers!).
"The stakes definitely feel ramped up  " Bradley  told TV Guide. "We know that we've got a real job to do. This has been a part of people's lives for so many years. This is our eighth season  and we are kind of feeling the pressure to get it right because we want to satisfy people...we just kind of want to give them an ending that they deserve."

Answer: Bradley


Question: Sen. Bob Corker (R-TN)  speaks with reporters after announcing  his  retirement at the conclusion of  his  term on Capitol Hill in Washington  U.S.  September 26  2017. REUTERS/Aaron P. Bernstein
WASHINGTON (Reuters)  - U.S. Senator Bob Corker   the influential Republican chairman of the Senate Foreign Relations Committee  said on Tuesday he will not run for re-election  a blow to a party already struggling to balance divisions between mainstream and more populist wings.
An establishment Republican   Corker  has been criticized from the right  and a conservative activist had already announced a primary challenge. But he was expected to keep the seat  and had amassed a $7.5 million campaign war chest.
 Corker  has ruled out running for governor of Tennessee.
âI have no idea what Iâm going to do. No idea whatsoever â  Corker  said in an interview. But he said he was not leaving out of frustration over deep party divides that have often paralyzed Congress.
 Corker  announced  his  retirement on the day of the failure of the latest Republican effort to repeal former Democratic President Barack Obamaâs healthcare law.
âI am not going to be one of the people who leaves here badmouthing what is one of the greatest privileges of oneâs life â  Corker  said.
He said he realized he was ready to retire on Aug. 24 during a factory groundbreaking in Clarksville  Tennessee  and almost announced his decision at least twice before Tuesday.  Corker  said that he made his announcement now to allow a strong candidate time to enter the Senate race.
 Corker  is the first senator to announce  his  retirement ahead of the 2018 mid-term elections  when one-third of the 100-seat chamber will be up for grabs. Tennessee is a solidly Republican state and the party  which currently holds a 52-seat majority in the Senate  is favored to keep his seat.
In his official announcement   Corker  said that âafter much thought  consideration and family discussionâ over the past year  he and his wife Elizabeth âhave decided that I will leave the United States Senate when my term expires at the end of 2018.â
 Sen. Bob Corker (R-TN)  walks away after speaking with reporters after announcing  his  retirement at the conclusion of  his  term on Capitol Hill in Washington  U.S.  September 26  2017. REUTERS/Aaron P. Bernstein
CLASHES WITH  TRUMP
In August  after Trumpâs much-criticized reaction to violence at a white supremacist rally in Virginia   Corker  told reporters in  his  home state Tennessee that Trump had not been able to demonstrate the âstabilityâ or competence that  he  needed to be successful as president.
After the exchange  the two men had an hour-long meeting at the White House this month that  Corker  has described as a wide-ranging and friendly discussion.
 Corker  will remain chairman of the Foreign Relations Committee until he leaves in January 2019. He said he wanted the panel to address issues including Secretary of State Rex Tillersonâs State Department reorganization  food aid reform  and the fight against human trafficking and modern slavery.
 Corker  said the committee would address the international nuclear agreement with Iran  as Trump faces a mid-October deadline for deciding whether to certify that Tehran is complying with that pact. That decision could force Congress to decide whether to reimpose sanctions.  Corker  would not say whether Trump had decided to certify or not.

Answer: Bob Corker


Question: Assailants opened fire on  Oliver Ivanovic   64  close to the offices of his political party in the Serb-controlled northern city of Mitrovica. He was taken to a hospital but doctors were unable to save him.
The doctors said  Ivanovic  had received at least five gunshot wounds to his upper torso. The assailants escaped in a car that was later found burned out. Kosovo police sealed off the area of the shooting and began a manhunt for the attackers.
 Ivanovic  was one of the key politicians in Serb-dominated northern Kosovo  a former Serbian province where tensions still remain high a decade after  it  declared independence in 2008. Serbia does not recognize that independence.
 Ivanovic  was considered a moderate who maintained relations with NATO and EU officials even after Serbia lost the control of its former province following NATO's 1999 bombing to stop a deadly Serb crackdown against ethnic Albanian separatists.
 Ivanovic   who was married with three children  had enemies both among Kosovo Albanians and nationalist Serbs because of his moderate policies.
A Kosovo court had convicted  Ivanovic  of war crimes during the 1998-99 war. That verdict was overturned and a retrial was underway.
FILE - In this Oct. 23  2004 file photo   Kosovo Serb politician Oliver Ivanovic  casts  his  ballot during general elections in the Serb-dominated part of Mitrovica  Kosovo.  64-year old Ivanovic  has died from wounds after being shot by unknown assailants Tuesday Jan. 16  2018  according to a statement from  his  lawyer Nebojsa Vlajic. (AP Photo/Darko Vojinovic  File)
Police officers secure the scene where unknown assailants opened fire and killed  Kosovo Serb politician Oliver Ivanovic  in front of  his  office in the northern  Serb-dominated part of Mitrovica  Kosovo  Tuesday  Jan. 16  2018. The Kosovo government has strongly denounced the slaying of a leading Serb politician in northern Mitrovica and says it considers it to be a challenge to "the rule of law". (AP Photo/Bojan Slavkovic)

Answer:
Oliver Ivanovic