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 _ .

Ex 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

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


Ex Input:
A rare white lion received a six-hour dental operation to remove the broken roots of its two rotting canine teeth. Aslan, a resident of the Kevin Richardson Wildlife Sanctuary on the outskirts of Pretoria, had been in pain since his canine teeth broke a year ago. The pain had resulted in the nine-year-old male becoming isolated, aggressive and agitated by its inability to bite down. Animal behaviourist Kevin Richardson notes that Aslan had become isolated, aggressive and agitated The video produced by denture company Fixodent, captures the operation and features lion whisperer and animal behaviourist Kevin Richardson. He says: ‘A lion without its bite is not really a lion, it’s really important for a lion to have a full set of teeth that are usable.’The lion is place under anaesthetic and has four teeth worked onThe doctor removes canine tooth fragments and sews up holeAnimal behaviourist Kevin Richardson notes lion is 'tough character'Video concludes with 'the king' being reintroduced to the prideThe lion lives at Kevin Richardson Wildlife Sanctuary in South Africa

Ex Output:
_ stays by the lion’s side for the duration of the operation as the rotten fragments of the canine tooth are pulled from its mouth.


Ex Input:
(CNN) President Donald Trump is expected to end a program that protected undocumented immigrants who came to the United States as children -- so-called "Dreamers" -- from deportation, four sources familiar with the decision told CNN. Two of the sources said the plan is to have a six-month delay in any action regarding the Deferred Action for Childhood Arrivals (DACA) program to allow Congress time to pass a fix through legislation that would allow the undocumented immigrants to stay in the country. The expected move -- which comes after weeks of White House deliberations about what to do in response to an ultimatum from 10 state attorneys general led by Texas -- would satisfy Trump's base but upend the lives of nearly 800,000 people who were working and studying in the US. The DACA program, which gave qualified applicants protections from deportation, is popular among Democrats and moderate Republicans, many of whom have introduced legislation in Congress to try to protect the population permanently.The program gave qualified applicants protections from deportation and the ability to work and study in the USTwo of the sources said the plan is to have a six-month delay in any action

Ex Output:

Some Republicans have implored Trump in recent days to keep the program going as _ works on a solution for the sympathetic population -- who in most cases know no other home than America.