The problem: Answer a question about this article:
According to reciprocity, the efficiency of an antenna used as a receiving antenna is identical to the efficiency as defined above. The power that an antenna will deliver to a receiver (with a proper impedance match) is reduced by the same amount. In some receiving applications, the very inefficient antennas may have little impact on performance. At low frequencies, for example, atmospheric or man-made noise can mask antenna inefficiency. For example, CCIR Rep. 258-3 indicates man-made noise in a residential setting at 40 MHz is about 28 dB above the thermal noise floor. Consequently, an antenna with a 20 dB loss (due to inefficiency) would have little impact on system noise performance. The loss within the antenna will affect the intended signal and the noise/interference identically, leading to no reduction in signal to noise ratio (SNR).
What is SNR?
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The answer: signal to noise ratio

The problem: Answer a question about this article:
The Appalachian Mountains are the coolest area of the state, with temperatures averaging in the low 40s and upper 30s F (63 C) for highs in the winter and falling into the low 20s F (5 C) or lower on winter nights. Relatively cool summers have temperatures rarely rising above 80 F (27 C). Average snowfall in many areas exceeds 30 in (76 cm) per year, and can be heavy at the higher elevations; for example, during the Blizzard of 1993 more than 60 in (152 cm) of snow fell on Mount Mitchell over a period of three days. Mount Mitchell has received snow in every month of the year.
What are the average high winter temperatures in the Appalachians?
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The answer: low 40s and upper 30s F

The problem: Answer a question about this article:
John's campaign started well. In November John retook Rochester Castle from rebel baron William d'Aubigny in a sophisticated assault. One chronicler had not seen "a siege so hard pressed or so strongly resisted", whilst historian Reginald Brown describes it as "one of the greatest [siege] operations in England up to that time". Having regained the south-east John split his forces, sending William Longespee to retake the north side of London and East Anglia, whilst John himself headed north via Nottingham to attack the estates of the northern barons. Both operations were successful and the majority of the remaining rebels were pinned down in London. In January 1216 John marched against Alexander II of Scotland, who had allied himself with the rebel cause. John took back Alexander's possessions in northern England in a rapid campaign and pushed up towards Edinburgh over a ten-day period.
John sent William Longespee to retake what?
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The answer: north side of London and East Anglia

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After the Seleucid defeat at the Battle of Magnesia in 190 BC, the kings of Sophene and Greater Armenia revolted and declared their independence, with Artaxias becoming the first king of the Artaxiad dynasty of Armenia in 188. During the reign of the Artaxiads, Armenia went through a period of hellenization. Numismatic evidence shows Greek artistic styles and the use of the Greek language. Some coins describe the Armenian kings as "Philhellenes". During the reign of Tigranes the Great (9555 BC), the kingdom of Armenia reached its greatest extent, containing many Greek cities including the entire Syrian tetrapolis. Cleopatra, the wife of Tigranes the Great, invited Greeks such as the rhetor Amphicrates and the historian Metrodorus of Scepsis to the Armenian court, and - according to Plutarch - when the Roman general Lucullus seized the Armenian capital Tigranocerta, he found a troupe of Greek actors who had arrived to perform plays for Tigranes. Tigranes' successor Artavasdes II even composed Greek tragedies himself.
When did the Seleucid defeat the Battle of Magnesia?
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The answer:
190 BC