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: We're gathering different points of view about this all weekend  and we're going to start with  Congressman Ryan Costello .  He  is a Republican.  He 's in  his  second term representing Pennsylvania's 6th District  which is northwest of Philadelphia. You might remember that reviving the steel industry was one of President Trump's campaign promises  and that's one of the factors cited in Mr. Trump's victory in Pennsylvania in the 2016 election. But  he  didn't win  Mr. Costello 's district  where Hillary Clinton won narrowly.
And  Congressman Costello  is with us now. Congressman  thanks so much for speaking with us.
RYAN  COSTELLO : Great to be with you. Strange bedfellows is an apt description for sure.
 COSTELLO : On the circumference of it  yes. Additionally - little known fact - the only domestic keg company in the country is in my district. And I spoke with them yesterday  and they are extremely happy with the decision because of what the price of aluminum from China is. So there's a lot of crosscurrents in terms of who supports this as well as - some who would normally support the president's economic policies have very deep-seated concerns over it.
 COSTELLO : Well  this is certainly doubling down to those who supported  him . And  he 's consistent here with whom  he  is looking out for. It does remain to be seen what the actual policy is. This is - this could - may at the moment be similar to withdrawal of the Paris accord - right? - which pleased  his  supporters but has not yet happened. So it remains to be seen formally what steps are taken.
MARTIN: That's  Representative Ryan Costello .  He  represents the 6th District of Pennsylvania. We reached  him  in Chester County. Congressman  thanks so much for speaking with us.
 COSTELLO : Thank you. Have a good day.
Example Output: Ryan Costello

Example Input: Regional leader Carles Puigdemont  is due to address the regional parliament on Tuesday afternoon and Madrid is worried  it  will vote for a unilateral declaration of independence.
Catalan President Carles Puigdemont at the Palau de la Generalitat  the regional government headquarters in Barcelona  Spain  October 6  2017. REUTERS/Yves Herman
 Puigdemont  said on Sunday  he  had not been in contact with the Madrid government for some time because  it  refused to discuss independence.
“What is happening in Catalonia is real  whether they like it or not. Millions of people have voted  who want to decide. We have to talk about this ”  he  said.
Example Output: Carles Puigdemont

Example Input: Russia's catastrophic wildfires this summer have demonstrated the need to reform the nation's forest protection legislation and the state forestry agency  President Dmitry Medvedev said Wednesday.
 The remarks appeared to reflect Medvedev's desire to take a higher profile on economic and domestic policy issues presently controlled by Prime Minister Vladimir Putin -- though Medvedev stopped short of an open challenge to his powerful predecessor and mentor.
 Putin has taken a highly visible lead in efforts to combat the fires  visiting affected areas and even taking a seat in a firefighting plane while Medvedev was chairing dull official meetings. Many political commentators perceived Putin's action as a sign of his intention to reclaim the presidency in 2012 and a clear warning to Mevedev to stand by.
 Medvedev indicated Wednesday that the prime minister's move to take direct control of the forestry agency  Rosleskhoz  could be insufficient to properly protect the nation's forests in the future.
 "If it's more convenient to work that way  you are welcome " Medvedev told a government meeting focused on forests. "But if it proves insufficient  I reserve the right to radically change those structures."
 He said the blazes had shown that the current law and the existing official structures can't properly protect the forests.
 "It's quite obvious that the legal base and the organizational structure that we have don't fit the purpose " Medvedev said in televised remarks.
 The president also said that the need for changing the current forest legislation also must be carefully analyzed.
Putin and Medvedev both have said they would decide later who will run for president.
 Medvedev avoided any direct criticism of Putin  but said Wednesday the 2006 law had left most of the nation's forests without due oversight.
 He also seemed to defy Putin on another issue -- the construction of a new highway northwest of Moscow that would destroy a forest near the town of Khimki. Putin's Cabinet has continued to support it despite growing public opposition.
Example Output:
Medvedev