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].

[Q]: Police in Sweden are investigating chilling letters posted through letterboxes across the country threatening to behead people unless they convert to Islam. The notes, which are signed ISIS and carry the terrorist organisation's flag, threaten to decapitate 'non-believers' unless they become a Muslim or pay a religious tax. They have been distributed among several cities including Stockholm and warn 'the police will not save you from being murdered'. Translated, the notes said: 'In the name of Allah, the merciful, full of grace. You who are not believers will be decapitated in three days in your own house. We will bomb your rotten corpses afterwards.Threatening 'Isis notes' posted through letterboxes across SwedenSaid people would be decapitated if they didn't convert to IslamPolice and Swedish intelligence investigating credibilityFor more of the latest Islamic State news visit www.dailymail.co.uk/isis 
 Question:_ radio stations reported police were investigating the new threats and comparing them to previous warnings of violence.
[A]: Sweden


[Q]: (CNN) The sooner babies get their own rooms, the longer they'll sleep on average, according to a new study that breaks with the recommendations of the American Academy of Pediatrics. Analyzing surveys from 230 first-time mothers at Penn State, Dr. Ian Paul, a pediatrician, found that babies slept for longer stretches if they didn't sleep in the same bedroom as their parents. At 4 months, babies who slept alone had the longest stretches of uninterrupted sleep -- by about 45 minutes, on average -- though they slept about the same amount of time as babies who slept in their parents' rooms.Babies who slept in their parents' rooms slept for shorter periods, a new study findsA leading pediatrics group recommends room-sharing with infants until 1 year 
 Question:The _ sample was also "not terribly diverse in terms of socioeconomic or racial diversity," which could cast doubts upon how much this research speaks for the general population, Moon said.
[A]: Penn State


[Q]: Scientists whose capture of the 'God particle' hit the headlines three years ago have obtained a new and much sharper picture of their trophy. Data from the Large Hadron Collider (LHC), the world's biggest atom smasher, have greatly increased what physicists know about the Higgs boson, which is responsible for giving other elementary particles mass. The results show with a new level of precision the way the particle is generated and decays, and how it interacts with other particles. CERN's Large Hadron Collider, located in a 27-kilometer (16.8-mile) tunnel beneath the Swiss-French border, was instrumental in the discovery of the Higgs boson. The subatomic particle had long been theorized but wasn't confirmed until 2013.Results show how particle is generated and decaysAlso reveals how it interacts with other particles 
 Question:Because of its fundamental importance, the _ was nicknamed the 'God particle'.
[A]:
Higgs