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.

Q: Article: If you look at the night sky, you'll often see stars moving very quickly. In fact, they move much more quickly than they should according to their size and the laws of physics. Scientists do not completely understand why the speed of these stars is so high. But many believe the reason is that much of the universe is made of something called "dark matter". Groups of stars called galaxies, such as the Milky Way, might even be made up of 90 percent dark matter. How much something weighs depends on where it is. The same object weighs only half as much on Mars as it does on Earth and almost three times as much on Jupiter. So scientists prefer to talk about the mass of something rather than how much it weighs, because mass does not change. They can work out the mass of galaxies by measuring the distance between them and the speed they move at. Recently, Jorge Penarrubia, a senior academic at Edinburgh University, UK, and his team discovered something interesting: The mass of the Milky Way is only half as much as the mass of another nearby galaxy, Andromeda. This seems strange, and dark matter may explain why. Finding out more about dark matter could help us understand how the universe began, but this is not easy. Lots of scientists with different types of expert knowledge are working on the problem. We can't see dark matter, it's very difficult to measure and we can't find out its mass. Unlike stars, dark matter doesn't produce or reflect light. But we can make a good guess that it is there because of the way things move and the way light bends. Experts now think dark matter may be very different from the matter that we find on Earth. There may also be five times as much dark matter in the universe as ordinary matter.
Answer: 7.5 kg; 45 kg

A: Something that weighs 15kg on Earth weighs about _ on Mars and _ on Jupiter.
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Q: Article: Traffic TV Avoid the jams -- see where tailbacks are before you set off and while on the move. Traffic TV is free to use on your personal computer and only PS4 per month (see below for other network charges) on your mobile. How does it work? Over 7,500 Trafficmaster cameras monitor traffic flow on over 8,000 miles of motorways and roads across the UK keeping you up to date 24 hours a day, 7 days a week. Traffic TV on your mobile This downloadable application lets you see where jams are building up, the speed of vehicles at hotspots, and live pictures from thousands of roadside cameras. Traffic TV is PS4 a month for Orange mobile customers, after a 30 day free trial. On other networks Traffic TV is PS5 a month, after a 7 day free trial. Listen to live traffic news Don't want the download? Then simply dial the numbers below from your mobile to hear the latest traffic updates. *Orange mobile users call 177 (calls cost up to 55p a minute) *Other mobile users call 1740 (calls cost up to 59p a minute) Help friends avoid jams Simply enter your friend's email address to send them a link to this service.
Answer: on a web page

A: You may read this advertisement most probably _ .
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Q: Article: A mother has lost parts of both of her legs after she saved the lives of her two children by lying on top of them as a deadly tornado swept through their home. Stephanie Decker, 36, lost one leg above the knee and the other above the ankle, yet her son and daughter escaped without a single scratch after the tornado destroyed their Henryville, Indiana home. Henryville was nearly entirely destroyed by a series of tornadoes that hit the South and Midwest, killing 39 and leaving thousands homeless. But while the Decker family lost their dream home to the severe weather, they are celebrating their safety. Mrs. Decker is now in a stable condition; her husband said, "What I told her was, 'you are alive and you get to see your kids grow up.' " Joe Decker told the reporters. Mr. Decker said that he had sent a text message to his wife from his workplace to tell her a tornado was heading for their three-story home. She rushed their eight-year-old son Dominic and five-year-old daughter Reese into the basement, where she tried her best to protect them from the storm. Mrs. Decker typed out what had happened by using an iPad in the hospital. She saw part of the house collapse on her and pulled her daughter out of the way. She doesn't remember anything after that. The home, which was partly built by Mr. Decker and his wife's father, is now completely destroyed, with a bathtub 200 feet away in a filed, the Courier Journal reported. The house took about nine mouths to build and four seconds to fall, Mr. Decker added. CEO Carl J. Tyler praised the Deckers who lost everything and said that the company has set up a trust fund to help pay their medical bills and the losses they suffered. He added, "They are some of the hardest working, giving people you could ever want to meet."
Answer: optimistic

A:
The Deckers' attitude towards their suffering from the tornado is _ .
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