Designated Player Rule

Columns: Year signed as DP | Player | Current club | 2019 guaranteed compensation
2017 | Paul Arriola | D.C. United | $ 707,000 | 2018 | Dom Dwyer | Orlando City | $ 1,503,333 | 2018 | Carlos Vela | Los Angeles FC | $ 6,300,000 | 2018 | Diego Rossi | Los Angeles FC | $ 1,052,000 | 2018 | Jesús Medina | New York City FC | $ 870,833 | 2018 | Ezequiel Barco | Atlanta United | $ 1,425,000

Example questions:
What is the nationality of the Designated Player athlete that signed with L.A. Galaxy ? | Which of the Designated Player Rule players that signed in 2016 was older ? | The Designated Player competitor that signed for the most money made his debut when he was how many years old ? | Whose record was broken on March 3 , 2013 by the Designated Player competitor that was signed in 2015 ?

Answers:
Mexican | Alejandro Bedoya | 16 | Clint Dempsey