Problem: This is a consequence of Lorentz reciprocity. For an antenna element  not connected to anything (open circuited) one can write . But for an element  which is short circuited, a current is generated across that short but no voltage is allowed, so the corresponding . This is the case, for instance, with the so-called parasitic elements of a Yagi-Uda antenna where the solid rod can be viewed as a dipole antenna shorted across its feedpoint. Parasitic elements are unpowered elements that absorb and reradiate RF energy according to the induced current calculated using such a system of equations.
What element absorbs and reradiate RF-energy?
The answer is the following: Parasitic


Almost 60 years later, 80 year old career criminal Henry (Harry) James Burge claimed to have committed the theft, confessing to a newspaper, with the story being published in the Sunday Pictorial newspaper on 23 February 1958. He claimed to have carried out the robbery with two other men, although when discrepancies with a contemporaneous report in the Birmingham Post newspaper (the crime pre-dated written police reports) in his account of the means of entry and other items stolen, detectives decided there was no realistic possibility of a conviction and the case was closed. Burge claimed the cup had been melted down to make counterfeit half-crown coins, which matched known intelligence of the time, in which stolen silver was being used to forge coins which were then laundered through betting shops at a local racecourse, although Burge had no past history of forgery in a record of 42 previous convictions for which he had spent 42 years in prison. He had been further imprisoned in 1957 for seven years for theft from cars. Released in 1961, he died in 1964.
What did they do with those coins? 
stolen silver was being used to forge coins which were then laundered through betting shops at a local racecourse


Input: Antenna (radio)
Antennas are characterized by a number of performance measures which a user would be concerned with in selecting or designing an antenna for a particular application. Chief among these relate to the directional characteristics (as depicted in the antenna's radiation pattern) and the resulting gain. Even in omnidirectional (or weakly directional) antennas, the gain can often be increased by concentrating more of its power in the horizontal directions, sacrificing power radiated toward the sky and ground. The antenna's power gain (or simply "gain") also takes into account the antenna's efficiency, and is often the primary figure of merit.

What is often the most imprtant crediting factor of antennas?
Output: efficiency


Input: Article: Leading up to the American Civil War, Baptists became embroiled in the controversy over slavery in the United States. Whereas in the First Great Awakening, Methodist and Baptist preachers had opposed slavery and urged manumission, over the decades they made more of an accommodation with the institution. They worked with slaveholders in the South to urge a paternalistic institution. Both denominations made direct appeals to slaves and free blacks for conversion. The Baptists particularly allowed them active roles in congregations. By the mid-19th century, northern Baptists tended to oppose slavery. As tensions increased, in 1844 the Home Mission Society refused to appoint a slaveholder as a missionary who had been proposed by Georgia. It noted that missionaries could not take servants with them, and also that the Board did not want to appear to condone slavery.

Now answer this question: What refused to appoint a slaveholder as a missionary?

Output: the Home Mission Society


Article: In June 1989, Nintendo of America's vice president of marketing Peter Main, said that the Famicom was present in 37% of Japan's households. By 1990, 30% of American households owned the NES, compared to 23% for all personal computers. By 1990, the NES had outsold all previously released consoles worldwide.[better source needed] The slogan for this brand was It can't be beaten. In Europe and South America, however, the NES was outsold by Sega's Master System, while the Nintendo Entertainment System was not available in the Soviet Union.

Question: Where was Nintendo not available?
Ans: Soviet Union


Input: United States presidential election, 2004
In March's Super Tuesday, Kerry won decisive victories in the California, Connecticut, Georgia, Maryland, Massachusetts, New York, Ohio, and Rhode Island primaries and the Minnesota caucuses. Dean, despite having withdrawn from the race two weeks earlier, won his home state of Vermont. Edwards finished only slightly behind Kerry in Georgia, but, failing to win a single state other than South Carolina, chose to withdraw from the presidential race. Sharpton followed suit a couple weeks later. Kuninch did not leave the race officially until July.

Besides Georgia, what other state primary did Edwards win?
Output:
South Carolina