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 _ .

Input: Consider Input: They are a mysterious relative of the Neanderthals who are thought to have roamed the plains of Siberia and east Asia long before modern humans arrived on the continent. But little is known about the Denisovans, a sister species of the Neanderthals who first emerged around 200,000 years ago, as so few of their fossilised remains have been discovered. Now researchers have unpicked a tiny piece of the puzzle about how this enigmatic human species lived - they regularly inhabited the same caves. Using pioneering DNA analysis of teeth and a fragment of pinky finger bone found at the Denisova cave in Altai Krai, in the Altai Mountains near Barnaul, Russia, the researchers have discovered they belonged to three individuals who lived there tens of thousands of years apart.Geneticists studied DNA from teeth and a pinky bone from a Siberian caveThey were found to belong to individuals living thousands of years apartIt has provided clues about how this mysterious human species livedThe Denisovans are thought to be a sister species of the Neanderthal

Output: 'Moreover, we find that nuclear diversity among the four _ is higher than among seven Neanderthals for which nuclear DNA have previously been recovered.


Input: Consider Input: (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

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


Input: Consider Input: (CNN) -- Children from a polygamist sect who one mother says are "hurting very badly" in state custody are likely to be returned to their parents, a CNN legal analyst says. FLDS member Margaret Jessop says her children "feel betrayed by adults." A Texas appeals court ruled Thursday that the state had no right to remove hundreds of children from the Fundamentalist Church of Latter-Day Saints' ranch in Eldorado on April 3, based on the suspicion that a few were being sexually abused. A sect mother who has four children in state custody said the matter has not been fully resolved because an appeal to the Texas Supreme Court is possible.More than 400 children likely to return to families, CNN's Jeffrey Toobin saysMother says she'll wait until children are with her before she rejoices over rulingParents say children have suffered from separationAgency that took children says it's considering next move


Output: Jessop and other _ parents said they had been permitted visits with their children in foster care.