instruction:
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].
question:
(CNN) Half his country may not support his efforts at peace, but Colombian President Juan Manuel Santos now has a Nobel Peace Prize for pursuing a deal to end the longest-running war in the Americas. Santos accepted his award Saturday after brokering a deal to stop the fighting in the 50-year conflict with the leftist rebel group Revolutionary Armed Forces of Colombia, better known by its Spanish acronym, FARC. "After six years of serious and often intense, difficult negotiations ... this agreement marks the beginning of the dismantling of an army and its conversion into a legal political movement," he said at the ceremony in Oslo, Norway.President Juan Manuel Santos honored for peace deal to end decades-long civil warColombia's Congress passed the deal after voters repudiated it in a referendum 
 Question:_ leaders who signed off on the deal were not in attendance as the ceremony's host country, Norway, still considers the group a terrorist organization.
answer:
FARC


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Pakistan has shut down Save the Children's headquarters in Islamabad and given aid agency 15 days to leave the country after accusing it of spying. Police locked the gate of the charity's office in the capital last night, demanded employees leave and put up a notice saying the building was sealed. Acting on behalf of the Ministry of the Interior, officials added that the government wanted all foreign nationals working with the charity to leave Pakistan within 15 days. It was not immediately clear how many foreigners were currently working with Save the Children in Pakistan. The charity, which has been in Pakistan for over 35 years, has had run-ins with the government since 2011, when it was linked to Shakil Afridi, a Pakistani doctor recruited by the CIA to help in the hunt that led to the killing of Osama bin Laden in Abbottabad.Police arrived at charity headquarters last night and told all staff to leaveOfficers then locked the gate of the office and sealed off the premisesAllegedly acting on behalf of the Ministry of the Interior, the officials then told foreign workers they must all leave the country within 15 daysSave the Children has been add odds with Pakistani politicians since 2011Charity was said to have been linked to a Pakistani doctor recruited by the CIA in the hunt to find Osama bin Laden, who was killed in Abbottabad 
 Question:An official at the charity said several staff members had been denied visas since 2012, and aid supplies had been blocked by _ authorities.
answer:
Pakistan


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(CNN) The United States eradicated malaria by spraying mosquito breeding grounds with DDT in 1951, roughly two decades after most of Western Europe eliminated the disease. History then offers hope, even as the world's first malaria vaccine, called RTS,S or Mosquirix, faces challenges: The effectiveness of the shot fades over time, according to a study released Wednesday. The vaccine's waning effect occurred especially among children living in areas with high rates of the disease. "Overall our study shows that RTS,S can benefit children, but suggests that a fourth dose may be important for sustaining this protection over the long term," Dr. Ally Olotu, lead author of the research published in the New England Journal of Medicine, said in a news release.A new study says the benefits of the world's first malaria vaccine weaken over yearsAnother trial is looking at expanded dosage of Mosquirix 
 Question:The researchers found that the risk of getting malaria among children vaccinated with _ was 35.9% less than in the control group during the first year.
answer:

Mosquirix