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]: (CNN) Khuram Shahzad Butt, a 27-year-old British national born in Pakistan who died in a hail of police bullets Saturday night after the London attack, was a tall, lanky, straggly bearded young man of few words -- a brainwashed follower of al-Muhajiroun, a loose grouping of British extremists supportive of ISIS linked to a large number of terrorist plots involving UK nationals. The latest on London attack CNN's Sandi Sidhu met him several times while reporting on the group in the United Kingdom between 2014 and 2016. He went by the name "Abz" or "Abu Zaitun" and seldom spoke during meetings. He was content to leave the task of proselytizing to louder, older members of the group, according to Sidhu.London attacker Khuram Shahzad Butt appeared in a 2016 Channel 4 documentary called "The Jihadis Next Door"At the time of the attack, Butt worked as a receptionist at a fitness center in Ilford, a friend from the gym said 
 Question:The identification of Butt as one of the attackers raised many questions about what _ authorities knew about him and when.
[A]: British


[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) When Palestinian militant group Hamas announced its new policy document to the world, it wasn't from Ramallah or Gaza City, but from the Sheraton hotel's gilded Salwa Ballroom in Doha. It was no surprise that Hamas chose Qatar. It's the home of outgoing Hamas leader, Khaled Meshaal, and much of his senior leadership. "Qatar is quite important for Hamas," said H.A. Hellyer, a senior non-resident fellow at the Atlantic Council. "Qatar provides strong financial aid to the occupied Palestinian territories and is a safe haven for a number of Hamas leaders." The recent crisis in the Persian Gulf region is putting that relationship in jeopardy. Earlier this month, nine countries including Saudi Arabia, the UAE, Egypt, and Bahrain cut diplomatic ties with Qatar and imposed financial embargoes of varying severity.Hamas spokesman says group hasn't been asked to leave QatarQatar says Hamas' presence is part of effort to mediate between the Palestinian factions 
 Question:_ is seen as having been under a series of pressures for the last few years, reflected in some significant internal changes.
[A]:
Hamas