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: Justice Department special counsel Robert Mueller broke his own record this week for guilty pleas. On Tuesday  Dutch attorney Alex van der Zwaan appeared in federal court and admitted he had lied to investigators about his contacts with  Donald Trump's former campaign vice chairman  Rick Gates .
On Friday   Gates himself  appeared before a federal judge and confirmed that  he  is changing  his  plea to guilty.  He  had been fighting the case brought against  him  and the former Trump campaign chairman  Paul Manafort  which alleged they laundered millions of dollars and broke other laws related to their work for clients in Ukraine.
 Gates  and Manafort have not been charged with conspiracy to defraud the U.S. by "impairing  obstructing and defeating the lawful functions of the government through fraud and deceit for the purpose of interfering with the U.S. political and electoral processes." That was the charge Mueller leveled at 13 Russians and three Russian companies he says did interfere with the election.
Or the special counsel's office could be laying down one brick in a larger structure. At the very least   Gates'  future testimony against  his  longtime business partner raises the likelihood that Manafort could be convicted of some or all of the charges  he  continues fighting.
Manafort and his lawyers know this. So one of Mueller's strategies in getting  Gates  to turn state's evidence might be to persuade Manafort to do the same and tell what he knows about other people in the Trump campaign orbit.
Or evidence from  Gates  might be what the special counsel's office needs to build a case against Manafort for conspiring in the 2016 Russian interference effort. Or  after years of working with Manafort   Gates  might have other evidence that would permit Mueller to bring new charges against Manafort.
Mueller announced a new indictment in Manafort's case on Friday evening. After  Gates  appeared in federal court Friday to enter his plea  Manafort continued to maintain his innocence and said he remained committed "to defend myself against the untrue piled up charges contained in the indictments against me."

Answer: Gates


Question: Washington (CNN)  Sen. Lindsey Graham  R-South Carolina   warned against a potential conflict with North Korea "if things don't change."
"If we have to go to war to stop this  we will "  Graham  told CNN's Wolf Blitzer on Tuesday. "If there's a war with North Korea it will be because North Korea brought it on itself  and we're headed to a war if things don't change."
 Graham 's comments on CNN's "The Situation Room" come amid rising tension between the US and North Korea  and on Tuesday  the Pentagon confirmed that North Korea had launched what the US military believes to be an intercontinental ballistic missile.
 Graham  clarified that  he  doesn't think war would be the best outcome but said the US won't let Kim Jong Un have the ability to strike America's mainland.

Answer: Graham


Question: CINCINNATI -- Even though Bengals head coach  Marvin Lewis  and  his  assistants have expiring contracts  no decision had been made as of Monday morning regarding whether  Lewis  will return to Cincinnati for a 16th season.
Although  Lewis  acknowledged there was some urgency to move quickly  it appears  he  and Bengals owner Mike Brown will continue to have more discussions before a decision is made.
"Yeah it is hard. I spoke with [the assistant coaches] this morning  we met with them this morning about it  and I told them that as far as from my direction  I would get them [an answer on] where things are quick as I could "  Lewis  said Monday.
 Lewis  has a?125-112-3 regular-season record with Cincinnati.  He  has led the team to the playoffs seven times  without a postseason victory. The Bengals wrapped up a?7-9 season Sunday with a 31-27 victory over Baltimore.
On Monday   Lewis  repeatedly professed a need for  him  and Brown to be on the same page.
"Every decision I have ever made here is mutual with both of us. Since January of '03 it's always been mutual. It has to be that way."  Lewis  said.
 Lewis  seemed reluctant to discuss what exactly would lead to a mutual decision to bring  him  back next year  cutting  himself  off at times and acknowledging  he  was worrying about revealing too much.  Lewis  said  he  thinks there's a path that would lead to  his  return  but didn't elaborate  instead joking that it was time to cut off the news conference.
 Lewis  and Brown were stuck in this position after the 2010 season. It took two days after that season to decide  Lewis  would return and sign a new deal.
Some of the reported issues at the time involved concessions  Lewis  wanted to see from Brown  including the size of the scouting staff  control over personnel (roster and coaching) and the need for an indoor practice facility. Although Brown did concede some things  the scouting staff remains small and an indoor practice facility was never built.
Although those specific issues might not factor in this time around  there are likely changes  Lewis  would like to see.  He  admitted it's more complicated than Brown simply extending an offer and  Lewis  accepting it.
"There's a lot of things. People have their viewpoint and I have my viewpoint. The one thing that we've been consistent on since I began here is staying on the same page. And I think that's important "  Lewis  said. "There's a direction the owner wants to have. ... And if  his  direction is different than my direction  then that's probably not good. We just have to make sure we're all on the same page."
 Lewis  said the roster is one of the things  he  and Brown discuss. When asked if  he  was happy with the roster prior to the season   Lewis  didn't fully answer the question. The Bengals lost both Andrew Whitworth and Kevin Zeitler to free agency and the offensive line struggled all year as a result.
"We're aligned on things "  Lewis  said. "But I think as you move forward  '17 is over and we're going into '18 now and the future  so I think everybody wants to make sure we stay on the same course together."
 Lewis  has repeated that  he  wants to continue coaching and has said there is no role for  him  in Cincinnati's front office and never has been.
"I don't know where these thoughts come from that people make up. But  no "  he  said.

Answer:
Marvin Lewis