Article: Such strategies, which minimize the maximum loss for each player, are called optimal. Von Neumann showed that their minimaxes are equal (in absolute value) and contrary (in sign). Von Neumann improved and extended the minimax theorem to include games involving imperfect information and games with more than two players, publishing this result in his 1944 Theory of Games and Economic Behavior (written with Oskar Morgenstern). Morgenstern wrote a paper on game theory and thought he would show it to von Neumann because of his interest in the subject. He read it and said to Morgenstern that he should put more in it. This was repeated a couple of times, and then von Neumann became a coauthor and the paper became 100 pages long. Then it became a book. The public interest in this work was such that The New York Times ran a front-page story. In this book, von Neumann declared that economic theory needed to use functional analytic methods, especially convex sets and topological fixed-point theorem, rather than the traditional differential calculus, because the maximum-operator did not preserve differentiable functions.

Question: Who was co-author with von Neman on the Theory of Games and Economic Behavior?
Ans: Oskar Morgenstern


Here is a question about this article: Free ISPs are Internet service providers that provide service free of charge. Many free ISPs display advertisements while the user is connected; like commercial television, in a sense they are selling the user's attention to the advertiser. Other free ISPs, sometimes called freenets, are run on a nonprofit basis, usually with volunteer staff.[citation needed]
What is the answer to this question: What are free ISPs similar to? 
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So... commercial television


The problem: Answer a question about this article:
The 15th century was a time of Islamic economic expansion, known as the Valencian Golden Age, in which culture and the arts flourished. Concurrent population growth made Valencia the most populous city in the Crown of Aragon. Local industry, led by textile production, reached a great development, and a financial institution, the Canvi de Taula, was created to support municipal banking operations; Valencian bankers lent funds to Queen Isabella I of Castile for Columbus's voyage in 1492. At the end of the century the Silk Exchange (Llotja de la Seda) building was erected as the city became a commercial emporium that attracted merchants from all over Europe.
When was the Valencian Golden Age?
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The answer: 15th century


Problem: Please answer a question about the following article about Department store:
From its origins in the fur trade, the Hudson's Bay Company is the oldest corporation in North America and was the largest department store operator in Canada until the mid-1980s, with locations across the country. It also previously owned Zellers, another major Canadian department store which ceased to exist in March 2013 after selling its lease holdings to Target Canada. Other department stores in Canada are: Canadian Tire, Sears Canada, Ogilvy, Les Ailes de la Mode, Giant Tiger, Co-op, Costco and Holt Renfrew. Grocery giant Superstores carry many non-grocery items akin to a department store. Woolco had 160 stores in Canada when operations ceased (Walmart bought out Woolco in 1994). Today low-price Walmart is by far the most dominant department store retailer in Canada with outlets throughout the country. Historically, department stores were a significant component in Canadian economic life, and chain stores such as Eaton's, Charles Ogilvy Limited, Freiman's, Spencer's, Simpsons, Morgan's, and Woodward's were staples in their respective communities. Department stores in Canada are similar in design and style to department stores in the United States.
How many stores did Woolco operate before selling their shares to Walmart? 
A: 160


Question: Read this and answer the question

The Black Wednesday economic disaster in September 1992 left the Conservative government's reputation for monetary excellence in tatters, and by the end of that year Labour had a comfortable lead over the Tories in the opinion polls. Although the recession was declared over in April 1993 and a period of strong and sustained economic growth followed, coupled with a relatively swift fall in unemployment, the Labour lead in the opinion polls remained strong. However, Smith died from a heart attack in May 1994.

What was Black Wednesday?
Answer: economic disaster


According to the official Twenty-Four Histories, the History of Ming compiled in 1739 by the subsequent Qing dynasty (1644–1912), the Ming dynasty established the "É-Lì-Sī Army-Civilian Marshal Office" (Chinese: 俄力思軍民元帥府) in western Tibet and installed the "Ü-Tsang Itinerant High Commandery" and "Amdo-Kham Itinerant High Commandery" to administer Kham. The Mingshi states that administrative offices were set up under these high commanderies, including one Itinerant Commandery, three Pacification Commissioner's Offices, six Expedition Commissioner's Offices, four Wanhu offices (myriarchies, in command of 10,000 households each) and seventeen Qianhu offices (chiliarchies, each in command of 1,000 households).
where was the É-Lì-Sī Army-Civilian Marshal Office established?
western Tibet