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].

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.
Nico Rosberg

(CNN) Squeals of delight echo around the room at Vanderbilt's Children's Hospital in Nashville, Tennessee. Nine-year-old cancer survivor Bryce Greenwell turns to his mother, Jenny. "Did you know about this?" he asks, hands cupped to his face in surprise. "Yes," she says with a nod, smiling from ear to ear. "Oh, my gosh, he has missed you guys so much!" pet therapist Michelle Thompson says as she hands Swoosh, her trained toy Pomeranian, over to two eager boys. "Did you miss him? He talks to me about you boys all the time." "I haven't seen him in a long time," says 7-year-old Mitchell Montalbano, who recently graduated from chemotherapy treatment, cancer-free. "Swoosh, what have you been up to?"Two boys who were treated for cancer treasured their time with therapy dog SwooshA new study looked at the impact of therapy dogs on children and their parents 
 Question:"I think everyone should have a chance with _," Bryce says.
Swoosh

Washington (CNN) The advertised purpose of President Barack Obama's pre-vacation news conference Thursday was to highlight gains in the war against ISIS in Iraq and Syria with the Pentagon as a backdrop. But for all his talk of terrorism, Russia and other geopolitical challenges, the underlying argument he wanted to make was clear: it's a serious business being commander-in-chief and the Republican who wants his job isn't fit for the Oval Office. Obama ridiculed Donald Trump's recent suggestion that the election system could be rigged, called on the candidate to act like a president since he's soon to be briefed on confidential information and implied that he didn't believe the billionaire businessman could be trusted with America's nuclear codes.Obama hit out at Trump just two days after branding him unfit to be commander in chiefTrump and Clinton are expected to soon start getting classified intelligence briefings 
 Question:Obama pointed to many such challenges in Thursday's _ news conference, particularly the fight against ISIS, also known as ISIL.

Pentagon

