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]: Washington (CNN) President Barack Obama and first lady Michelle Obama sought to lift Hillary Clinton to victory while Donald Trump warned she was the "face of failure" and predicted he would blow her away in Tuesday's election. On a dramatic final day of the ugliest campaign in modern history, the candidates and their surrogates held nearly two dozen rallies, chased one another through swing states and made desperate last pleas to voters. 2016 exit polls Clinton won the tiny town of Dixville Notch, New Hampshire, as eight residents cast midnight ballots in an election day tradition. Four voted for Clinton, two backed Trump while one person supported Libertarian Gary Johnson and one person wrote in 2012 GOP nominee Mitt Romney.Clinton is better positioned than TrumpBut her leads are far from dominant 
 Question:_ has been making a strong push there amid narrowing polls.
[A]: Donald Trump


[Q]: Photos of US ambassador to South Korea Mark Lippert meeting with the country's leaders have emerged for the first time since the envoy was attacked by a knife-wielding pro-North Korean activist. Lippert is recovering at Severance Hospital in Seoul, and was able to meet with US Navy Admiral James Winnefeld as well as members of South Korea's ruling and opposition parties. Police are charging the activist, Kim Ki-jong, 55, with murder after he slashed the ambassador while screaming demands for Korean reunification. The attack Thursday on Lippert, at a forum about reunification, prompted rival North Korea to gloat about 'knife slashes of justice,' that left deep gashes and damaged the ambassador's tendons and nerves.Ambassador Mark Lippert injured in a surprise attack at a breakfast meetingKim Ki-jong, a 55-year-old anti-US activist, was immediately arrestedPolice seeking three charges in attack, including attempted murderDoubts over whether he carried out attack alone or was part of conspiracyKim has visited North Korea several times and had books from the countryLippert needed 80 stitches for slash to his face and may have nerve damageHe could be discharged from hospital Wednesday after stitches removed 
 Question:_ is well-known among police and activists as one of a hard-core group of protesters willing to use violence to highlight their causes.
[A]:
Kim Ki-jong


