In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Ex Input:
Article: Every day, young people across the globe are doing their part to keep the Earth healthy and green. These are just a few kid heroes for the planet. Manatee Minder When she was in second grade, Stephanie Cohen read about a baby manatee hit by a boat off the coast of Florida. Marine biologists saved the manatee. But caring for the sea creature was costly. Stephanie took up a collection and raised $ 27 in one day. Now 18, Stephanie still raises money to help these " gentle giants". She sells manatee decorations, candles and cards on her website kmad. Org. Color Us Green! At Clarendon Elementary School, in Secaucus, New Jersey, the students know what to do with old, used and broken crayons .Recycle them ! They collect the crayons and send them to Crazy Crayons, where they are made into different shapes and sizes. In the past eight years, new Jersey students have recycled nearly nine tons of crayons. Goodbye, Paper Bags! When Adrienne Boukis, 15, was in sixth grade, in Walnut Creek, California, she noticed that many of her classmates carried paper lunch bags. To help kids cut down on waste, she invented a reusable lunch bag, which is partially made from recycled plastic bottles. She sells the bags at greengearbag. Com and some of the _ go to charity that is in need of money. He' s Skiiing to Save the Earth Parker Liautaud, 15, wanted to raise awareness about the effects of climate change on the polar regions. He set out to become one of the youngest people ever to ski to the North Pole. Parker feels he met his goal to inspire others. "All young people have the power to make a change."he said in an interview.
Answer: They all involve themselves in green activities.

Ex Output:
What do the kid heroes have in common ?

Ex Input:
Article: Several recent studies have found that being randomly assigned to a roommate of another race can lead to increased tolerance but also to a greater likelihood of conflict. Recent reports found that lodging with a student of a different race may decrease prejudice and compel students to engage in more ethnically diverse friendships. An Ohio State University study also found that black students living with a white roommate saw higher academic success throughout their college careers. Researchers believe this may be caused by social pressure. In a New York Times article, Sam Boakye - the only black student on his freshman year floor -said that "if you're surrounded by whites, you have something to prove." Researchers also observed problems resulting from pairing interracial students in residences. According to two recent studies, randomly assigned roommates of different races are more likely to experience conflicts so strained that one roommate will move out. An Indiana University study found that interracial roommates were three times as likely as two white roommates to no longer live together by the end of the semester. Grace Kao, a professor at Penn said she was not surprised by the findings. "This may be the first time that some of these students have interacted, and lived, with someone of a different race," she said. At Penn, students are not asked to indicate race when applying for housing. "One of the great things about freshman housing is that, with some exceptions, the process throws you together randomly," said Undergraduate Assembly chairman Alec Webley. "This is the definition of integration." "I've experienced roommate conflicts between interracial students that have both broken down stereotypes and reinforced stereotypes," said one Penn resident advisor (RA). The RA of two years added that while some conflicts "provided more multicultural acceptance and melding ," there were also "jarring cultural confrontations." The RA said that these conflicts have also occurred among roommates of the same race. Kao said she cautions against forming any generalizations based on any one of the studies, noting that more background characteristics of the students need to be studied and explained.
Answer: Interracial lodging may have diverse outcomes.

Ex Output:
What can we learn from some recent studies?

Ex Input:
Article: Printing images is easy. Just select an image of a purple robot on your PC, for example, and press print. Your home printer exactly shoots drops of ink onto a flat piece of paper, creating the robot's 2-D image. "Printing" 3-D objects is different. Take the purple robot. First select a file of the 3-D printer. Immediately, the printer begins making noise, and a nozzle releases plastic material in thin layers. In two or three hours, a 3-D purple robot is standing before you. 3-D printing has developed to the point where printers can now create high-quality objects using a variety of materials, including metals. That means 3-D printers can now make final products that meet high industrial standards. 3-D printers are already being used to make parts for racecars and jets as well as man-made limbs and hearing aids. So far, few homes have 3-D printers. That's because 3-D printing is not only new to most people but also quite expensive. To bring 3-D printing to the masses, some retail stores plan to offer the service. For example, the Staples chain of office supply stores has announced that it will offer 3-D printing in Europe beginning in 2013. Customers will be able to submit their own 3-D designs to Staples website for printing. After the job is done, they'll pick up their item at a nearby Staples store or have it mailed to their homes. This service is sure to encourage many more people to try out 3-D printing.
Answer: People with physical disabilities.

Ex Output:
According to this article, who are 3-D printed parts already helping?