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 _ .
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Question: (CNN) -- X-ray data from NASA's MESSENGER probe points to high levels of magnesium and sulfur on the surface of the planet Mercury, suggesting its makeup is far different from that of other planets, scientists say. The unmanned orbiter has been beaming back data from the first planet for a year and a half. Readings from its X-ray spectrometer point to a planet whose northern volcanic plains formed through upwellings of rocks more exotic than those often found on the Earth, the Moon or Mars, said Shoshana Weider, a researcher at the Carnegie Institution of Washington. "Before this MESSENGER mission, a lot of people assumed it was very like the Moon -- it's dark, it's grey," Weider said. But while the Moon's surface formed when light materials floated to the top of an ocean of molten rock, the low level of calcium on Mercury indicates that didn't happen there.NASA probe gives insight into Mercury's formationThe surface has sulfur levels 10 times higher than Earth'sThe MESSENGER orbiter has been circling Mercury since March 2011

Answer: It's about 5% the size of _ and revolves around the sun every 88 days.


Question: (CNN) Attorney General Jeff Sessions met twice last year with the top Russian diplomat in Washington whose interactions with President Donald Trump's former national security adviser Michael Flynn led to Flynn's firing, according to the Justice Department. Sessions did not mention either meeting during his confirmation hearings when he said he knew of no contacts between Trump surrogates and Russians. A Justice official said Sessions didn't mislead senators during his confirmation. The revelation prompted key Democrats to call for Sessions' resignation, including Senate Minority Leader Chuck Schumer and House Minority Leader Nancy Pelosi. "Last night when I read the revelations ... and his decision to mislead Congress without those contacts, I felt a knot in the pit of my stomach," Schumer told reporters Thursday. "The information reported last night makes it clear, beyond the shadow of a doubt, that Attorney General Sessions cannot possibly lead an investigation ... with these revelations, he may very well become the subject of it."The diplomat's interactions with former Trump national security adviser Mike Flynn led to Flynn's firingThe Justice Department disclosed the meetings

Answer: _ was an early Trump backer and regular surrogate for him as a candidate.


Question: Hong Kong (CNN) -- Chinese authorities say an investigation into a massive attack at a train station in the southwest Chinese city of Kunming has yielded a connection to Xinjiang, a restive autonomous region in the nation's northwest. At least 29 people have died and more than 130 were injured, local authorities say. Witnesses described men clad in black outfits stabbing and attacking people with cleavers and knives. The local government officials told Xinhua, China's state-run news agency, that evidence at the crime scene indicate "it was orchestrated by Xinjiang separatist forces." No further explanation was given. In October, Chinese authorities also indicated a Xinjiang connection when a jeep plowed into crowds in Tiananmen Square, killing five and injuring at least 40. That incident, which has been identified as a terrorist attack, was "carefully planned, organized and premeditated," police had said on its official Weibo account online.China's Xinjiang autonomous region has a long history of frictionUyghurs speak a language related to Turkish, have close ties to central AsiaMigration of Han Chinese to the region has fueled tensionsTensions have sporadically erupted into violence

Answer:
Xinjiang is now home to more than 8 million _, up from 220,000 in 1949, and 10 million Uyghurs.