In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Example Input: Article: We know that the earth has become warmer over the last century. The Intergovernmental Panel on Climate Change (IPCC), a group established by the World Meteorological Organization and the United Nations Environment Program, reports that the average surface temperature of the earth has increased during the twentieth century by 0.6deg _ 0.2degC.(The _ 0.2degC means that the increase might be as small as 0.4degC or as great as 0.8degC). This may seem like a small shift, but although regional and short--term temperatures do fluctuate over a wide range, global temperatures are generally quite stable. In fact, the difference between today's average global temperature and the average global temperature during the last Ice Age is only about 5 degrees C. Indeed, it's warmer today around the world than at any time during the past 1,000years, and the warmest years of the previous century have occurred within the past decade. We also know that human activities--primarily the burning of fossil fuels--have increased the greenhouse gas content of the earth's atmosphere significantly over the same period. Carbon dioxide is one of the most important greenhouse gases, which trap heat near the planet's surface. The vast majority of climate researchers agree with these overall findings. The scientific disagreements that do still exist primarily concern detailed aspects of the processes that make up these largely accepted general themes. You can think of this website as a window into the world of scientific research. In this primer, you'll find a general discussion of the physical processes underlying the earth's climate, an outline of the kinds of data that may shed light on how the climate is changing--and the role of human activity in these changes--and a description a some of the questions and uncertainties that researchers continue to explore. This primer is organized into four interconnected sections: the Atmosphere; the Hydrosphere ; the Cryosphere ; and the Biosphere .
Answer: engages in the climate and changes about the earth.
Example Output: We know from the text that "IPCC" _ .

Example Input: Article: Since Edmund Hillary and Tenzing Norgay climbed Mount Everest, Mount Qomolangma's peak is no longer a lonely place and is turning into a trash heap. So far, more than 350 climbers have successfully reached the peak. And they have complained about waiting for hours in the bottlenecks on the way to the peak, a situation that isn't just uncomfortable -- it's cold and windy up there -- but downright dangerous. If bad weather strikes, climbers can and do die. As a matter of fact, the dangerous crowds aren't the only problem on Qomolangma. All those climbers need to bring a lot of _ --and much of them ends up being left on the mountain, sometimes even the peak itself. Mount Qomolangma is becoming the world's largest dump. Here's mountaineer Mark Jenkins writing in National Geographic about the state of Qomolangma: "The two standard routes, the Northeast Ridge and the Southeast Ridge, are disgustingly polluted with oxygen cans and torn tents everywhere." But the good news is that some mountaineers are taking it upon themselves to clean up Qomolangma. Mountianeer Paul Thelen and his friend Eberhard Schaaf are part of the annual Eco Everest Expedition, which has been cleaning up rubbish from base camps to the peak since 2008. So far they've collected over 13 tons of garbage. Some of that rubbish is even being used for a higher purpose. As part of the Mount Everest 8844 Art Project, a group of 15 artists from Nepal collected 1.5 tons of garbage brought down the mountain by climbers. They've transformed the cans and oxygen tanks--and in one case, part of the remains of a helicopter--into 74 pieces of art that have already gone on exhibition in Nepal's capital. Part of the profit from sales will go to the Everest Peakers Association, which has helped collect tons of rubbish on the slopes of the mountain.
Answer: created works of art using rubbish from Qomolangma
Example Output: The group of 15 Nepali artists _ .

Example Input: Article: Last week the manager of an old jeweler's shop received a letter marked "personal", so of course his secretary gave it to him unopened. As he was very busy, the letter lay on his desk till tea-time. Then he opened it and aPS10 note fell out onto his desk. With the note was a short letter. This is what it said: Dear sir, In 1935 I got engaged. But unfortunately at that time there was a lot of unemployment and I lost my job. I was six months without a job and then I got work again. But of course I was very short of money. I came to your shop to buy a wedding ring. The assistant brought some rings for me to look at, but she was called away for a moment, and I put one of the rings in my pocket. When she came back, I said I did not know the size of my girl-friend's finger. So I left the shop without buying a ring. My wife died a short while ago and the fact that I never paid for her ring has been on my conscience all these years. At the time the ring cost PS2 so I reckon that is about PS10 at today's price. And I am sending you that amount. Yours truly, A customer "Well, well, well," said the manager, "life is full of surprises!"
Answer: A Customer Pays His Bill
Example Output:
The best headline for this article would be _ .