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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Question: Sebastian Vettel laughed off Nico Rosberg’s claim that he hopes Ferrari can catch Mercedes during a spiky press conference after Sunday's Australian Grand Prix. Lewis Hamilton, who romped to victory at the season-opening race in Melbourne, and team-mate Rosberg, finished more than half-a-minute clear of Vettel to seal an utterly dominant weekend for the world champions. After the race, Rosberg said he hoped Ferrari would be able to bring the challenge to Mercedes, with he and Hamilton expected to dominate this term having won 16 of the 19 races in 2014. Lewis Hamilton was caught in the middle as Nico Rosberg (left) and Sebastian Vettel traded jibesSebastian Vettel issued spiky response when Nico Rosberg claimed he hoped Ferrari would be able to catch frontrunners MercedesVettel quizzed: 'You hope you slow down? Is that what you are saying?'The spat rumbled on throughout the post-race press conferenceRosberg and Vettel finished behind race winner Lewis Hamilton 
 Question:_ responded: ‘I hope that you can give us a challenge.

Answer: Nico Rosberg


Question: (CNN) A new "Special Relationship" between Britain and the US has emerged: the relationship between Donald Trump and Nigel Farage. Both men have turned voter disaffection into electoral triumph. Farage did so in the now infamous Brexit -- taking the UK out of the EU; Trump in winning the US presidency. Both men identified the other as a brother in arms along the way. So much so that at one recent rally, Trump told his supporters: "We are going to do something so special. It will be so special. It will be an amazing day. It will be called Brexit plus plus plus."President-elect Donald Trump bonded with Brexit leader Nigel Farage over common goalsBoth galvanized a large anti-establishment vote to win unexpected victories in 2016 
 Question:In victory, Farage was fast to say that one of the biggest Brexit campaign slogans, a £350 million a week rebate from the EU once the _ left, was untrue.

Answer: US


Question: (CNN) The Iraqi Air Force dropped thousands of leaflets over Mosul on Saturday night to warn residents of a looming offensive on the ISIS-held city. "It's victory time," blares a headline on the newspaper-style leaflets, quoting Iraqi President Haider al-Abadi in remarks directed at Mosul's residents. "Time to celebrate a clean Iraq without 'Daesh' (ISIS) or any dark belief." Another headline reads, "We are preparing to take action to free Mosul and regain security and stability in the region." The four-page leaflets tell residents that coalition forces are making advances on Iraq's second-largest city and that no one should panic. Residents are asked to stay away from certain parts of the city, avoid ISIS positions, remain in their homes and seal their windows and doors. A phone number for Mosul residents to report ISIS activity is included.Iraqi military, Kurdish forces and other groups are preparing to retake MosulISIS tells its wounded fighters they can leave for Raqqa, Syria, a source says 
 Question:The warning to residents came hours after ISIS started telling wounded fighters in Mosul that they can go to the group's power base in _ as Iraqi forces and others prepare to retake the key city, a source inside Mosul told CNN.

Answer:
Syria