The problem: Answer a question about this article:
An error sometimes made is the confusion of discussion regarding Greece’s Eurozone entry with the controversy regarding usage of derivatives’ deals with U.S. Banks by Greece and other Eurozone countries to artificially reduce their reported budget deficits. A currency swap arranged with Goldman Sachs allowed Greece to "hide" 2.8 billion Euros of debt, however, this affected deficit values after 2001 (when Greece had already been admitted into the Eurozone) and is not related to Greece’s Eurozone entry.
Why aren't the deficit values affected by the currency swap with Goldman Sachs relevant to Greece's Eurozone entry?
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The answer: affected deficit values after 2001


The problem: Answer a question about this article:
On February 8, 2015, at the 57th Annual Grammy Awards, West walked on stage as Beck was accepting his award for Album of the Year and then walked off stage, making everyone think he was joking around. After the awards show, West stated in an interview that he was not joking and that "Beck needs to respect artistry, he should have given his award to Beyoncé". On February 26, 2015, he publicly apologized to Beck on Twitter.
What artist's acceptance speech did Kanye interrupt by walking on stage at the 57th Grammys?
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The answer: Beck


The problem: Answer a question about this article:
Besides increased efficiency of power plants, there was an increase in efficiency (between 1950 and 1973) of the railway utilization of this electricity with energy-intensity dropping from 218 to 124 kwh/10,000 gross tonne-km (of both passenger and freight trains) or a 43% drop. Since energy-intensity is the inverse of energy-efficiency it drops as efficiency goes up. But most of this 43% decrease in energy-intensity also benefited diesel traction. The conversion of wheel bearings from plain to roller, increase of train weight, converting single track lines to double track (or partially double track), and the elimination of obsolete 2-axle freight cars increased the energy-efficiency of all types of traction: electric, diesel, and steam. However, there remained a 12–15% reduction of energy-intensity that only benefited electric traction (and not diesel). This was due to improvements in locomotives, more widespread use of regenerative braking (which in 1989 recycled 2.65% of the electric energy used for traction,) remote control of substations, better handling of the locomotive by the locomotive crew, and improvements in automation. Thus the overall efficiency of electric traction as compared to diesel more than doubled between 1950 and the mid-1970s in the Soviet Union. But after 1974 (thru 1980) there was no improvement in energy-intensity (wh/tonne-km) in part due to increasing speeds of passenger and freight trains.
Elimination of what helped the efficiency of diesel traction to go up?
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The answer: 2-axle freight cars


The problem: Answer a question about this article:
Gorbachev's inability to alleviate any of Armenia's problems created disillusionment among the Armenians and fed a growing hunger for independence. In May 1990, the New Armenian Army (NAA) was established, serving as a defence force separate from the Soviet Red Army. Clashes soon broke out between the NAA and Soviet Internal Security Forces (MVD) troops based in Yerevan when Armenians decided to commemorate the establishment of the 1918 First Republic of Armenia. The violence resulted in the deaths of five Armenians killed in a shootout with the MVD at the railway station. Witnesses there claimed that the MVD used excessive force and that they had instigated the fighting.
When was the NAA formed?
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The answer:
May 1990