Problem: 51st state:

Residents of Puerto Rico pay U.S. federal taxes: import/export taxes, federal commodity taxes, social security taxes, therefore contributing to the American Government. Most Puerto Rico residents do not pay federal income tax but do pay federal payroll taxes (Social Security and Medicare). However, federal employees, those who do business with the federal government, Puerto Rico–based corporations that intend to send funds to the U.S. and others do pay federal income taxes. Puerto Ricans may enlist in the U.S. military. Puerto Ricans have participated in all American wars since 1898; 52 Puerto Ricans had been killed in the Iraq War and War in Afghanistan by November 2012.

How many Afghans have died in the Iraq War and War in Afghanistan?
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A: unanswerable


Problem: Franco-Prussian War:

The Battle of Spicheren, on 5 August, was the second of three critical French defeats. Moltke had originally planned to keep Bazaine's army on the Saar River until he could attack it with the 2nd Army in front and the 1st Army on its left flank, while the 3rd Army closed towards the rear. The aging General von Steinmetz made an overzealous, unplanned move, leading the 1st Army south from his position on the Moselle. He moved straight toward the town of Spicheren, cutting off Prince Frederick Charles from his forward cavalry units in the process.

On what date did the battle of Spicheren take place?
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A: 5 August


Problem: Georgian architecture:

In towns even most better-off people lived in terraced houses, which typically opened straight onto the street, often with a few steps up to the door. There was often an open space, protected by iron railings, dropping down to the basement level, with a discreet entrance down steps off the street for servants and deliveries; this is known as the "area". This meant that the ground floor front was now removed and protected from the street and encouraged the main reception rooms to move there from the floor above. Where, as often, a new street or set of streets was developed, the road and pavements were raised up, and the gardens or yards behind the houses at a lower level, usually representing the original one.

Most town people lived in what type of houses?
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A: terraced houses


Problem: Detroit:

Detroit and the rest of southeastern Michigan have a humid continental climate (Köppen Dfa) which is influenced by the Great Lakes; the city and close-in suburbs are part of USDA Hardiness zone 6b, with farther-out northern and western suburbs generally falling in zone 6a. Winters are cold, with moderate snowfall and temperatures not rising above freezing on an average 44 days annually, while dropping to or below 0 °F (−18 °C) on an average 4.4 days a year; summers are warm to hot with temperatures exceeding 90 °F (32 °C) on 12 days. The warm season runs from May to September. The monthly daily mean temperature ranges from 25.6 °F (−3.6 °C) in January to 73.6 °F (23.1 °C) in July. Official temperature extremes range from 105 °F (41 °C) on July 24, 1934 down to −21 °F (−29 °C) on January 21, 1984; the record low maximum is −4 °F (−20 °C) on January 19, 1994, while, conversely the record high minimum is 80 °F (27 °C) on August 1, 2006, the most recent of five occurrences. A decade or two may pass between readings of 100 °F (38 °C) or higher, which last occurred July 17, 2012. The average window for freezing temperatures is October 20 thru April 22, allowing a growing season of 180 days.

What body of water affects Detroit's climate?
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A:
Great Lakes