Given the task definition, example input & output, solve the new input case.
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.
Output: Raheem Morris
Here the main entity is Raheem  Morris since the main topic of the document is about him starting as quarterback.

New input case for you: CLEVELAND -- LeBron James is leaving the Cavaliers next summer . 
LeBron left the Cavs AND the Heat .
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
LeBron James