In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

Passengers aboard a SkyWest flight to Puerto Vallarta, Mexico, were stunned Tuesday when an hour from reaching their sunny vacation destination, their pilot turned the plane around due to 'paperwork issues.' Flight 4507 departed Salt Lake City International Airport just after noon Tuesday, carrying 57 travelers en route to the popular resort town on the Pacific Ocean. But less than two hours into the three-hour flight, a pilot's voice came over the intercom to announce that the small Canadair jet will be returning back to Utah. Scroll down for video Clerical snafu: SkyWest Flight 4507 carrying 57 passengers to Puerto Vallarta, Mexico, Tuesday was forced to turn around and return to Utah due to a paperwork issueSkyWest Flight 4507 departed Salt Lake City International Airport Tuesday afternoon, carrying 57 vacationers to Puerto VallartaPilot's voice came over intercom an hour away from scheduled arrival time saying plane will be returning to Salt Lake City due to clerical errorTravelers were offered hotels rooms and food vouchers, and rebooked on a Wednesday flight
The pilot explained to passengers that he could not land in _.

Seoul, South Korea (CNN) -- South Korea's spy chief said Wednesday that there is a high chance that North Korea will attack again following a strike last month that has led to renewed tensions on the peninsula, the Yonhap news agency reported. South Korean lawmaker Rhee Beum-Kwan quoted National Intelligence Service chief Won Sei-hoon as making the prediction, Yonhap reported. "North Korea pushed for reckless actions as internal complaints grew over its hereditary power succession and economic situations worsened," the lawmaker quoted Won as saying. Meanwhile, South Korea and the United States wrapped up joint military exercises on the Yellow Sea, while South Korea carried on with plans for artillery firing drills next week amid simmering tensions with Pyongyang.Intelligence chief warns of more attacksReport: S. Korea is in talks with the U.S. for more drills to deal with "provocation by the enemy"Government ministers from South Korea and Japan will attend a December meetingNorth Korea warns U.S.-South Korea drills could lead to "all-out war any time"
The _ is the acronym for North Korea's formal name: the Democratic People's Republic of Korea.

Spain’s Queen Letizia was seen as a threat to the country’s royal household by former king Juan Carlos, according to a new book about the royal family. Spain’s former king Juan Carlos viewed his soon-to-be daughter-in-law as ‘the worst thing that happened to [the royal family] in many years’, before she married his son Felipe. The 77-year-old Juan Carlos abdicated last year in favour of his 47-year-old son, now King Felipe VI. But he has always been cold towards Queen Letizia, 43, a divorcee and 'commoner'. As a former television journalist, Letizia was an unusual addition to the Spanish royal family, which has always been famously shut-off to the media.Spain's ex-king Juan Carlos viewed his future daughter-in-law as a threatHe thought Letizia, a divorced former journalist, would 'destroy' the crownFormer king laughed at her with friends, calling her 'la chacha' - the maidNew book about the court of King Felipe VI is set to be published this week

But they add that she has helped forge a connection between the _ public and the monarchy.