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].

Input: Consider Input: [Hereâs what we know so far about Team Trumpâs ties to Russian interests]
Trump had received private assurances from then-FBI Director James B. Comey starting in January that he was not personally under investigation . Officials say that changed shortly after  Comeyâs  firing.
Five people briefed on the interview requests  speaking on the condition of anonymity because they were not authorized to discuss the matter publicly  said that Daniel Coats  the current director of national intelligence  Mike Rogers  head of the National Security Agency  and  Rogersâs  recently departed deputy  Richard Ledgett  agreed to be interviewed by Muellerâs investigators as early as this week. The investigation has been cloaked in secrecy  and it is unclear how many others have been questioned by the FBI.
The White House now refers all questions about the Russia investigation to Trump âs  personal attorney  Marc Kasowitz.
The obstruction-of-justice investigation of the president began days after  Comey  was fired on May 9  according to people familiar with the matter. Muellerâs office has taken up that work  and the preliminary interviews scheduled with intelligence officials indicate that his team is actively pursuing potential witnesses inside and outside the government.
[Inside Trumpâs anger and impatience â and his sudden decision to fire  Comey ]
The interviews suggest that Mueller sees the question of attempted obstruction of justice as more than just a â he  said   he  saidâ dispute between the president and the fired FBI director  an official said.
 Comey  confirmed publicly in congressional testimony on March 20 that the bureau was investigating possible coordination between the Trump campaign and the Russians.
Comeyâs statement before the House Intelligence Committee upset Trump  who has repeatedly denied that any coordination with the Russians took place. Trump had wanted  Comey  to disclose publicly that  he  was not personally under investigation  but the FBI director refused to do so.
Coats told associates that Trump had asked him whether Coats could intervene with  Comey  to get the bureau to back off its focus on former national security adviser Michael Flynn in its Russia probe  according to officials. Coats later told lawmakers that he never felt pressured to intervene.
Republican lawmakers seized on Comeyâs testimony to point out that Trump was not in the FBIâs crosshairs when  Comey  led the bureau.
âI expect loyalty â Trump told  Comey   according to written testimony

Output: James B. Comey


Input: Consider Input: Northwestern athletics dodged a bullet on Bryant McIntoshâs knee injury. But not Clayton Thorsonâs.
 Thorson  got carted off Friday in the Music City Bowl after making a 24-yard catch on a trick play.  He  immediately grabbed  his  right knee as Nissan Stadium hushed and teammates approached to offer encouragement.
After the game NU coach Pat Fitzgerald said that a preliminary exam revealed ânothing overly alarming â¦ I think  he  hyperextended it  from my vantage point.â
But subsequent tests revealed a tear and there is no timetable for  his  return. Surgery is expected in a few weeks. Torn ACLs typically have a 9- to 12-month recovery period.
 Thorson  announced Dec. 19 that  he  would return to Evanston for  his  fifth season and fourth as a starter. Had  he  been healthy and entered the NFL draft   he  figured to be a late-round pick.
If  Thorson  isnât ready for NUâs Aug. 30 (Thursday night) season-opener at Purdue  Northwestern likely will turn to either TJ Green or Andrew Marty.
 Thorson âs 27 victories as the starting quarterback are the most in NU history. The 6-foot-4  220-pound Wheaton North alumnus ranks second in program history in passing yards (7 513) and completions (688). Heâs a career 57.4 percent passer and made third-team all-Big Ten in 2017.
 Clayton Thorson 's return gives NU a fourth-year starter at QB Â»

Output: Clayton Thorson


Input: Consider Input: Byun Jong-Rak was among the first people in Seoul to hear the news of the invasion. Police came at dawn on June 25 to the dyeing factory where he worked.
 "Leave the city! The North Koreans are coming " they told him.
 Jo's eldest brother was in the North Korean military and another brother served in South Korea's army. "My eldest brother told me to go to the South but I never saw him after that."
 Just before the end of the war  Jo heard from a cousin that herher eldest brother probably survived. To this day  she has had no news of him. The younger brother was killed.


Output: Byun Jong-Rak