In Canada, the term "football" may refer to Canadian football and American football collectively, or to either sport specifically, depending on context. The two sports have shared origins and are closely related but have significant differences. In particular, Canadian football has 12 players on the field per team rather than 11; the field is roughly 10 yards wider, and 10 yards longer between end-zones that are themselves 10 yards deeper; and a team has only three downs to gain 10 yards, which results in less offensive rushing than in the American game. In the Canadian game all players on the defending team, when a down begins, must be at least 1 yard from the line of scrimmage. (The American game has a similar "neutral zone" but it is only the length of the football.)
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When a down begins, how far away must the American defending team be?
Ah, so.. unanswerable

Ratification of the treaty the following year led to resumption of hostilities and in 1860, with Anglo-French forces marching on Beijing, the emperor and his court fled the capital for the imperial hunting lodge at Rehe. Once in Beijing, the Anglo-French forces looted the Old Summer Palace, and in an act of revenge for the arrest of several Englishmen, burnt it to the ground. Prince Gong, a younger half-brother of the emperor, who had been left as his brother's proxy in the capital, was forced to sign the Convention of Beijing. Meanwhile, the humiliated emperor died the following year at Rehe.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where did the emperor go?
Ah, so.. Rehe

In the 2015 US News & World Report America's Best Graduate Schools, the law school is ranked 18th nationally, out of over 180 law schools. In particular, its Clinical Education Program is currently ranked 4th in the nation. This year, the median score placed the average student in the 96th percentile of test takers. The law school offers a full-time day program, beginning in August, for the J.D. degree. The law school is located in a state-of-the-art building, Anheuser-Busch Hall (opened in 1997). The building combines traditional architecture, a five-story open-stacks library, an integration of indoor and outdoor spaces, and the latest wireless and other technologies. National Jurist ranked Washington University 4th among the "25 Most Wired Law Schools."
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where is the Washington University School of Law ranked in the 2015 US News & World Report America's Best Graduate Schools?
Ah, so..
18th