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].
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Question: (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.

Answer: Mexican


Question: While conventional cancer treatment involves chemotherapy and radiation, one Queensland woman says she is 100 per cent in the clear after choosing a more natural, drug-free route. Sunshine Coast mother-of-three, Corissa Macklin-Rice, 43, told Daily Mail Australia she was diagnosed with an aggressive form of stage three breast cancer in December 2013 which had spread into her lymph nodes. But after undergoing a double mastectomy to remove the tumours, the animal rights activist and former hairdresser decided to fight the rest of her battle using less conventional and 'natural' healing methods. 'After the surgery I was told I had a 24 per cent chance of survival if I didn't do any of the chemotherapy or radiation or hormone follow-up treatments - they ridiculed me and said if I left it too long I would die and they couldn't do anything to help me,' Ms Macklin-Rice told Daily Mail Australia.Ms Macklin-Rice was diagnosed with aggressive breast cancer in 2013She had a double mastectomy to remove the cancerous lumps in her chestInstead of chemotherapy or radiation she decided on a drug-free planShe began eating vegan and would drink 13 juices a day and lots of fruitShe would also do five 45 minute long coffee enemas per dayUsed illegal 'black salve' ointment that draws cancerous tumours outThe controversial corrosive salve burns through layers of skinThe 43-year-old says she's 100 per cent cancer free and happier than everDr Sue Ieraci said there's 'no evidence to back up' Macklin-Rice's beliefsDo you have a story? Email FemailAU@mailonline.com 
 Question:Ms Macklin-_ said she tried to ignore the criticism she receives online from those sceptical of her methods.

Answer: Rice


Question: (CNN) The estimated 22,000 attendees of the Rotary International Convention were quick to their feet Monday morning in Atlanta. Inspiration for the many standing ovations came not only from the encouraging words of Atlanta Mayor Kasim Reed, professional wrestling star John Cena, Rotary President John Germ and famed Microsoft founder Bill Gates. It was also the sight of observers in wheelchairs lining the middle rows of the Georgia World Congress Center auditorium that moved the crowd to rise from their seats again and again. The Rotarians, wearing glowing LED bracelets, came to Atlanta to commit once again to the elusive goal they first outlined in 1985: a world free of polio, the highly infectious disease that invades the nervous system and can cause total paralysis in a matter of hours. The disease can be prevented by a safe vaccine, which can protect a child for life when given multiple times.In 1985, polio paralyzed more than 350,000 children in 125 countries every yearLast year, just 40 cases were reported worldwide 
 Question:Though he praised the _' hard-won achievements, he also addressed the hard question on the minds of most attendees.

Answer:
Rotary