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: At least Raheem Morris finally has the name of the Bucs' starting quarterback in the back of his mind.
 He wants to make sure he made the decision with his head and not just his heart.
 That's why Morris declined to name his choice between Byron Leftwich and Luke McCown on Friday until after one last consultation with his coaching staff.
 After that  Morris said  he would inform the owners  then his team before making the eagerly awaited announcement. Players were off Friday  so an announcement could come this morning.
 "We'll have a decision here in the near future " Morris said. "I think we've got to go with who we think gives us the best chance to win.
Example solution: Raheem Morris
Example explanation: Here the main entity is Raheem  Morris since the main topic of the document is about him starting as quarterback.

Problem: State Department spokeswoman Heather Nauert said Secretary of State Rex Tillerson and Russian Foreign Minister Sergei Lavrov spoke by telephone on Tuesday  after Washington and the United Nations both announced sanctions against North Korea in recent days.
Moscow said Lavrov told  Tillerson  “Washington’s aggressive rhetoric” and beefing up of its military presence in the region had heightened tension and was unacceptable.
 Tillerson  has emphasized diplomacy but the administration of President Donald Trump has repeatedly warned that all options  including military ones  are on the table regarding North Korea.
In October  Trump said  Tillerson  was “wasting his time” trying to negotiate with North Korea and this month the White House followed up an offer by the secretary of state to begin talks with no pre-conditions by saying that no negotiations could be held until North Korea improves its behavior.

Solution: Rex Tillerson