TASK DEFINITION: This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
PROBLEM: In 121 BC, Han forces expelled the Xiongnu from a vast territory spanning the Hexi Corridor to Lop Nur. They repelled a joint Xiongnu-Qiang invasion of this northwestern territory in 111 BC. In that year, the Han court established four new frontier commanderies in this region: Jiuquan, Zhangyi, Dunhuang, and Wuwei. The majority of people on the frontier were soldiers. On occasion, the court forcibly moved peasant farmers to new frontier settlements, along with government-owned slaves and convicts who performed hard labor. The court also encouraged commoners, such as farmers, merchants, landowners, and hired laborers, to voluntarily migrate to the frontier.

SOLUTION: Who made up a majority of the people on the frontier?

PROBLEM: RMIT University was also ranked among the top 51–100 universities in the world in the subjects of: accounting, Business and Management, communication and media studies, computer science and information systems. The Swinburne University of Technology, based in the inner city Melbourne suburb of Hawthorn is ranked 76–100 in the world for Physics by the Academic Ranking of World Universities making Swinburne the only Australian university outside the Group of Eight to achieve a top 100 rating in a science discipline. Deakin University maintains two major campuses in Melbourne and Geelong, and is the third largest university in Victoria. In recent years, the number of international students at Melbourne's universities has risen rapidly, a result of an increasing number of places being made available to full fee paying students. Education in Melbourne is overseen by the Victorian Department of Education and Early Childhood Development (DEECD), whose role is to 'provide policy and planning advice for the delivery of education'.

SOLUTION: Which university maintains two major campuses in Melbourne and Geelong and is the third largest university in Victoria?

PROBLEM: Windows 8 was distributed as a retail box product on DVD, and through a digital download that could be converted into DVD or USB install media. As part of a launch promotion, Microsoft offered Windows 8 Pro upgrades at a discounted price of US$39.99 online, or $69.99 for retail box from its launch until January 31, 2013; afterward the Windows 8 price has been $119.99 and the Pro price $199.99. Those who purchased new PCs pre-loaded with Windows 7 Home Basic, Home Premium, Professional, or Ultimate between June 2, 2012 and January 31, 2013 could digitally purchase a Windows 8 Pro upgrade for US$14.99. Several PC manufacturers offered rebates and refunds on Windows 8 upgrades obtained through the promotion on select models, such as Hewlett-Packard (in the U.S. and Canada on select models), and Acer (in Europe on selected Ultrabook models). During these promotions, the Windows Media Center add-on for Windows 8 Pro was also offered for free.

SOLUTION:
During it's launch how much was a Windows 8 upgrade?