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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].
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A British man who spent five months fighting against ISIS in Syria has been banned from giving a speech at his old university over fears he encourages others to travel to the region. Macer Gifford, 28, fought with the Kurdish group YPG and was due to give a talk on Tuesday at top London university UCL, organised by Kurdish Society president Kava Kurda. But Union Activities and Events Officer, Asad Khan, said the decision was due to 'concerns an event with a person speaking about their experiences fighting in Syria could lead to others going and fighting in the conflict'.Macer Gifford, 28, fought with the Kurdish group YPG in Northern SyriaHe was due to give a talk about the conflict at UCL on TuesdayHis talk was aiming to 'shine a light' on the ongoing conflict with ISISBut student union chief Asad Khan stopped the event from happeningFor full news coverage on ISIS visit [Link] 
 Question:'In absence of advice from the police, _ indicated that their preference would be to not invite Mr Gifford to speak on this occasion, although the final decision rested with us.'
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UCL


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(CNN) In 2004, Mostafa Salameh had a vivid dream: he was praying for peace on the top of a mountain. "I woke up sweating and I saw myself on top of the world," Salameh tells CNN. Back then, Salameh had no expedition experience, little money and couldn't have pointed to Mount Everest on a map. Fast forward to 2017, and he has become the first Jordanian to complete the "Explorers Grand Slam," which entails climbing the Seven Summits, including Mount Everest, and reaching the North and South poles. Only 15 other people have ever achieved the Grand Slam. His amazing life has now become the subject of an international book, published by Bloomsbury and endorsed by King Abdullah II of Jordan and British adventurer Ranulph Fiennes.Mostafa Salameh has become the first Jordanian to climb the Seven Summits, and trek to both the North and South polesHe has released a book "Dreams of a Refugee: From the Middle East to Mount Everest" detailing his adventures 
 Question:Almost immediately afterward, Salameh stopped partying, smoking and began training for the _.
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Explorers Grand Slam


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Havana (CNN) U.S. President Barack Obama put the authoritarian government in Havana on the spot Monday, taking questions from reporters and insisting that his Cuban counterpart also deliver answers to pointed queries on human rights, political prisoners and economic reforms. Though they both acknowledged deep disagreements on these issues, the two leaders found common ground on the topic of the economic embargo on Cuba, which both want lifted. Obama went so far as to declare that "the embargo's going to end," though he couldn't say when. In an extraordinary sign of the shifting attitudes, Castro was willing to answer one question on why his regime was keeping Cubans incarcerated for expressing anti-government views. But his response only underscored the schisms between himself and Obama.President Barack Obama and Cuban leader Raul Castro shook hands at the Palace of the Revolution in Old Havana on MondayScores of anti-Castro dissidents from the group Ladies in White were arrested over the weekend and detained after their weekly protest"¿Que bolá Cuba?" the U.S. President wrote on Twitter on Sunday, using an informal Cuban greeting 
 Question:_, making a statement before the reporters' questions, said that work toward improving economic conditions in his country was progressing.
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Castro