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 input: 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 output: Raheem Morris
Example explanation: Here the main entity is Raheem  Morris since the main topic of the document is about him starting as quarterback.
Q: The switch to a federal system was one of the key planks of  President Rodrigo Duterteâs election campaign   aimed to remedy what  he  saw as neglect by a Manila-centric political establishment that has left provinces in perpetual poverty.
The push to change the constitution has been a divisive issue  with critics accusing lawmakers of trying to prolong their stay in office  or of seeking a way for  Duterte  to stay in power beyond the end of his term in 2022.
 Duterte  has made clear  he  has no desire to stay longer than  his  term and  if anything  would prefer to retire earlier.
Lawmakers have yet to decide on what federal model to adopt  Mercado said.  Duterte âs preference is for one similar to that of France.
A:
Rodrigo Duterte