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.

Input: Consider Input: Article: Australia has promised to introduce the most comprehensive carbon trading program outside Europe in 2010. The government in Canberra plans to cut greenhouse gas emissions by at least five percent by 2020, but it could make bigger reductions if other countries agree to tougher targets. The Australian government warns that without tough environmental measures the country could lose key industries and jobs. Climate Change Minister Penny Wong says the economy is under threat and decisive action is needed. Central to the government's climate change plan is a carbon emissions trading program that will be introduced within two years. It would involve one thousand of the nation's biggest companies and would cover about three-quarters of Australia's greenhouse gas emissions. Many scientists believe that greenhouse gases, such as carbon dioxide and methane, contribute to global warming. Many of them are released by burning fuels such as coal and oil. Companies will be required to buy permits for each ton of carbon they emit, although big polluting exporters will receive up to 90 percent of their carbon licenses free. Many business leaders want the government to delay the plan because of the current global financial crisis, which is slowing the Australian economy. Peter Anderson from the Australian Chamber of Commerce and Industry says it is irresponsible to bring in a carbon trading plan now. Environmentalists, on the other hand, say Prime Minister Kevin Rudd has not properly addressed the threat of climate change. Activists had sought a minimum emissions cut of 25 percent. Instead, the Rudd government aims to cuts carbon emissions by at least five percent of 2000 levels by 2020. That amount could rise to 15 percent, if future global agreements set such a target. Ray Nias of the environmental group WWF says Australia will pay the price for low targets. "This is a deeply, deeply disappointing target," Nias said. "It commits Australia to long-term climate change. It will make Australia's ability to negotiate global agreements very, very difficult. It is much lower than even we had imagined." Australia has one of the highest per-person greenhouse emissions rates in the world because of its reliance on coal for electricity. _
Answer: Environmentalists.

Output: Which group supports to cut carbon emissions by at least 25%?

Input: Consider Input: Article: An astronomer is making a case for launching pop singer Justin Bieber into suborbital space aboard a private rocket ship. The idea is not to rid the world of the Canadian teenager -- he would come back down to Earth eventually, after all -- but rather to help jump-start the emerging suborbital spaceflight industry. It would generate a lot of public interest, which would help commercial spaceflight pick up some much-needed momentum, said Seth Shostak, senior astronomer at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, California. "If there's more interest, there are more customers. If there are more customers, there's more technical development. It's a positive feedback loop, and obviously that's good." Such missions would return to Earth without completing a full lap around the planet. Instead, the flights would hit the edge of space about 62 miles (100 kilometers) above Earth, experience a few minutes of weightlessness, then re-enter the atmosphere and land back at a spaceport. None of these firms are ready to fly customers yet, but some are getting close. For instance, Virgin Galactic hopes to begin powered test flights of its SpaceShipTwo vehicle later this year, with commercial operations perhaps beginning in 2013 or 2014. It is SpaceShipTwo that reportedly grabbed the attention of Beyonce and Jay-Z. Virgin Galactic has collected deposits from nearly 500 customers willing to pay $200,000 for a ride aboard SpaceShipTwo, and both Virgin and XCOR have inked deals to fly scientists and their experiments on research flights. So a suborbital market already exists -- but Shostak is thinking about ways to make it grow. A celebrity launch isn't Shostak's only idea. Suborbital firms should also promote their activities aggressively via social media, Shostak said, and they should make sure their spaceships are bristling with cameras both inside and out, to give the public dramatic views of every mission. Some observers view commercial suborbital spaceflight as a potentially transformative industry, saying it could serve as a stepping stone to the exploration and exploitation of space on an unprecedented scale. While the industry's success is far from assured, Shostak offered some reason for optimism: The American public remains keen on space.
Answer: To arouse the American public's interest.

Output: Why may Justin Bieber be sent into suborbital space?

Input: Consider Input: Article: Fidenzio Salvatori is determined that the city of Toronto will have an outdoor marketplace for merchants from its immigrant community, complete with dancing and other forms of amusement form their native countries. "Toronto is truly multicultural ," he said in a newspaper interview. "It's a city from many places, and multicultural marketplace will help Torontonians to understand and appreciate the rich variety of cultural groups in our city." Salvatori, aged 23, will soon complete his studies at the University of Toronto. He was eleven years old when he came to Canada from Italy with his parents. "Most of Toronto's immigrants are from lands where the marketplace has always been part of daily life," he said. Salvatori has been interested in getting an open-air market for Toronto for the last three years. This year, with the help of two fellow students, he prepared a proposal on the subject and presented it to the city's Executive committee, asking for their support. The proposal pointed out Toronto's rich variety of national groups, "whose customs include market shopping." Under a Canadian government program for multiculturalism, the three students have received two thousand dollars with which they will do a study to find out whether Toronto's immigrant businessmen would support an open-air market. They hope the merchants will support the plan strongly. "A study done earlier this year showed that 90 percent of shoppers would be in favor of it," Salvatori said. "At first it would be an experiment. But we think it will prove to be good business for the merchants, as well as tourist attraction."
Answer: To keep the cultural variety of the city.
Output: What is Fidenzio Salvatori's purpose of having an outdoor marketplace for Toronto?