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:
Comet lander Philae may be sitting on an object teeming with alien microbial life, according to two leading astronomers. Distinct features of the comet 67P/Churyumov-Gerasimenko, such as its organic-rich black crust, are best explained by the presence of living organisms beneath an icy surface, they claim. The experts go as far as to suggest the comet is more hospitable to life than the Earth's polar regions. Rosetta, the European space craft orbiting the comet, is also said to have detected strange 'clusters' of organic material that look suspiciously like viral particles. But neither Rosetta nor its lander are equipped to search for direct evidence of life after a proposal to include this in the mission was allegedly laughed out of court.Leading space experts say comet may be capable of housing microbial lifeEven suggest comet is more hospitable to life than Earth's polar regionsCalculate that its distinct feature point to presence of living organismsProfessors plan to include life-detecting device on lander was laughed at

Ex Output:
'Five hundred years ago it was a struggle to have people accept that the _ was not the centre of the universe.


Ex Input:
A couple who played Mary and Joseph in their school nativity are to tie the knot 30 years later. Lindsay Taylor donned an old frock and Paul McGann wrapped one of his mother's tea-towels around his head when they took to the stage as five-year-olds, playing the lead roles in the festive re-enactment of the birth of Christ. Now the old school friends will be centre stage once more - but this time to get married, three decades on from when they were first introduced to one another...as the Holy couple. The pair met in class but only properly became friends following their starring roles in the Christmas play.Lindsay Taylor and Paul McGann played the lead roles in Christmas playPair were friends thereafter but drifted apart and lost contact completelyBumped into each other on Liverpool night out last year and started datingNow they're set to marry - more than three decades after first being paired

Ex Output:
'_ was chosen to be Joseph because of his good behaviour and I was picked as Mary, for some reason, because I was blonde with big blue eyes.


Ex Input:
(CNN) -- Efforts to remove cats from Macquarie Island, a sub-Antarctic island and World Heritage Site, have indirectly led to environmental devastation, according to a report published in the Journal of Applied Ecology. Finch Creek on Macquarie Island in 2007 shows lack of vegetation on the island compared to 2001... The removal of cats has led to a boom in the island's rabbit population -- another species introduced by humans -- causing widespread devastation to the island's vegetation. According to the study's lead author, Dr. Dana Bergstrom of the Australian Antarctic Division: "Satellite images show substantial island-wide rabbit-induced vegetation change. By 2007, impacts on some protected valleys and slopes had become acute. We estimate that nearly 40 percent of the whole island area had changed, with almost 20 percent having moderate to severe change."Absence of cats left rabbit population to devastate Macquarie Island's vegetationCats and rabbits are invasive species introduced to the island in 19th centurySub-Antarctic Macquarie Island provides cautionary tale of interventions and risks

Ex Output:

The scientists behind the study claim that the _ is a rare example of so-called "trophic cascades" -- the knock-on effects of changes in one species' abundance across several links in the food chain.