In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

[EX Q]: (CNN) -- The Circuit of the Americas in Austin, Texas lies just 200 miles from the Mexican border. On Sunday it will host the first U.S. Grand Prix since 2007 -- and thousands of Formula One fans are expected to cross the Rio Grande to cheer on a driver they know as "Checo." Sergio Perez has become one of the darlings of Mexico, a country that in recent times has become more synonymous for the drugs war waged by Felipe Calderon during his tenure as president. The sporting focus this weekend will be on America, but the problems of its neighbor will come into sharp focus in the Mexican town of Nuevo Laredo -- the closest crossing point for those hoping to see Perez at what is, in effect, his home race.Formula One driver Sergio Perez looking forward to his "home" race in Texas on SundayThe Mexican is expected to have thousands of fans crossing the border to support himHe has been one of F1's surprise success stories in only his second season on the gridPerez has earned a big-money move to McLaren after three podium placings in 2012 
 Question:It's the best country in the world and I'm so proud to be _," adds Perez, as his bright smile breaks out for the first time in conversation.
[EX A]: Mexican

[EX Q]: A couple have proved that love can happen in the most unlikely of places after they met while both undergoing liver transplants. Wayne Boden, 49, and Shelley, 35, from Belvedere, Kent, have tied the knot after their eyes met across a hospital ward three years ago. The pair, who were in their pyjamas when they first felt an attraction, even spent their honeymoon competing at the British Transplant Games. Wayne, a lift engineer, was admitted to hospital in 2012 to wait for a liver transplant after his body rejected an earlier organ. While there he met Shelley, a nursery nurse, who was having rejection treatment for a donor liver she had received six months earlier.Wayne Boden, 49, and new wife Shelley, 35, from Kent, first met in hospitalShelley was discharged before Wayne but left him a romantic bedside noteThe couple spent their honeymoon at the British Transplant Games 
 Question:_, who had a transplant after suffering autoimmune hepatitis, said: 'If I wasn't in hospital for my rejection we wouldn't have ever met.
[EX A]: Shelley

[EX Q]: (CNN) When Sudanese refugee Aziz Adam landed on Christmas Island, in Australian territory, he thought his days of horror and torture were over. Fleeing without his family, under threat of death for being a member of the wrong tribe in Sudan, he told CNN he would rather die in the ocean than be tortured in his home country. But when he was transferred to Australia's remote detention center on Manus Island in 2013, he realized his trauma had only just begun. "They just want us to die. For the last three years we were under heavy, systematic torture (which) aim to force us to go back ... Hundreds of us lost their minds completely," he said.Exclusive: Two Manus Island detainees react to the news of the detention center's closureAt least 800 men are still in the center, some of whom have been there for three years 
 Question:"When I came to Australia first, I thought (I was) in safe hands and place, I started to think how to get my family out of that mess in _.
[EX A]:
Sudanese