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) 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.
answer:
British


question:
Sudan has withdrawn its soldiers from Abyei, a disputed border region also claimed by South Sudan, but has left police officers, the United Nations peacekeeping mission said Wednesday. "The mission has confirmed the full withdrawal of the SAF from Abyei area yesterday," said Josephine Guerrero, a spokeswoman for the U.N.'s Department of Peacekeeping Operations in New York, referring to the Sudan Armed Forces. "Armed police forces are still in the area." South Sudan's army spokesman, Philip Aguer, said he is "skeptical" that Sudan has truly pulled troops out. He said he had received reports that the Sudan Armed Forces left two platoons of soldiers dressed in police uniforms in Abyei town, and that two battalions remain about 40 miles away in Diffra, which is the only oil field inside the disputed territory.The U.N. has called for Sudan and South Sudan to withdraw forces from AbyeiA South Sudan army spokesman questions whether Sudan has truly pulled its forces outMany people remain displaced in the disputed border regionSudan and South Sudan have returned to peace talks 
 Question:But the new nation depends on pipelines and processing facilities that remain in _.
answer:
Sudan


question:
SIM cards may be about to join car phones and pagers in the telecoms graveyard. Apple and Samsung are rumoured to be in advanced talks with the GSMA - the association that represents the mobile telecom industry – to replace fiddly cards with an e-SIM. It’s hoped that electronic SIM cards could give consumers more flexibility so they can easily swap mobile networks. Anne Bouverot, chief executive of the GSMA, told The Financial Times the London-based association is close to announcing an agreement to produce a standardised SIM for devices. MailOnline has contacted Apple and Samsung for comment. The technology will likely be similar to the Apple SIM that launched with the iPad Air 2, allowing users to swap between data networks.Apple and Samsung are rumoured to be in advanced talks with the GSMA - to replace fiddly cards with an e-SIMAssociation is close to announcing an agreement to produce a standardised e-SIM for devices, meaning next gen phones may use themEmbedded electronic alternative should make swapping networks easier 
 Question:However, unlike Apple’s offering, the e-SIM would be embedded into a smartphone or tablet, meaning there will be no more need for the _ slot, TechSpot reported.
answer:

SIM