TASK DEFINITION: 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].
PROBLEM: Floyd Mayweather Jnr and Manny Pacquiao come face-to-face in Los Angeles on Wednesday . The meeting marks the first, and only time, the pair will square-off ahead of the weigh-in, 24 hours before their mouth-watering May 2 blockbuster bout, so it promises to be explosive. The press conference gets under way at 8.30pm (UK time) and Sportsmail will bring you live coverage so be sure to tune in. Floyd Mayweather and Manny Pacquiao (right) come face to face on stage in Los Angeles on Wednesday Mayweather arrives in Los Angeles for the press conference, accompanied by his security team Pacquiao, trainer Freddie Roach (right) and Bob Arum (second left) pose as they arrive in Los AngelesFloyd Mayweather and Manny Pacquiao went head-to-head in Los AngelesPair meet in their first and only press conference ahead of May 2 fightPacquiao arrived first along with trainer Freddie Roach and Bob ArumMayweather accompanied by entourage - including Justin BieberREAD: Mayweather and Pacquiao get the red carpet treatment 
 Question:_ is a veteran at these promotional days and is clearly in his element, laughing and joking as he poses for pictures on the red carpet.

SOLUTION: Floyd Mayweather Jnr

PROBLEM: We're not bluffing, the Obama administration told Afghanistan on Tuesday in announcing for the first time it has started planning for the possible withdrawal of all U.S. troops by the end of the year if no security agreement is signed. Statements by the White House and Defense Secretary Chuck Hagel showed President Barack Obama's impatience with Afghanistan President Hamid Karzai's refusal to sign the agreement that would keep several thousand American troops in the country after combat operations conclude this year. In a phone call with Karzai on Tuesday to discuss upcoming elections for a new Afghan leader, Obama made clear that time was running out to properly plan for keeping any U.S. forces in the country beyond 2014, the White House said.President Obama calls Afghan leader to discuss security agreementObama orders planning for bringing home all U.S. troops at the end of 2014Afghan President Karzai refuses to sign a deal to keep some troops thereThe White House says an agreement could happen after Karzai leaves office in April 
 Question:Obama, he said, has been very clear that the possibility of U.S. troops staying in Afghanistan depends "on whether we have a bilateral security agreement signed by the Afghani government, to assure our rights of our troops and other important elements that are required any time _ has troops in another country."

SOLUTION: U.S.

PROBLEM: Hong Kong (CNN) -- Chinese table tennis player Zhuang Zedong, a key figure in what became known as the "ping pong diplomacy" that helped thaw frosty Cold War relations between the United States and China, has died aged 73, state-run news agency Xinhua reported. Zhuang's chance meeting with a U.S. player was instrumental in Beijing's decision to invite the American table tennis team for an exhibition match in 1971. That match laid the groundwork for the visit of U.S. President Richard Nixon in 1972 and ultimately paved the way for the establishment of diplomatic ties in 1979, ending China's isolation from the outside world.Chinese table tennis legend Zhuang Zedong has died aged 73He was key figure in "ping pong diplomacy" that helped thaw ties between China, U.S.U.S.-China table tennis match led to 1972 visit by U.S. President Richard Nixon 
 Question:"I looked at him, thinking, 'he is not the one who makes national policies, he is just an athlete, an ordinary _'," he recalled.

SOLUTION:
United States