Input: Article: Antenna tuning generally refers to cancellation of any reactance seen at the antenna terminals, leaving only a resistive impedance which might or might not be exactly the desired impedance (that of the transmission line). Although an antenna may be designed to have a purely resistive feedpoint impedance (such as a dipole 97% of a half wavelength long) this might not be exactly true at the frequency that it is eventually used at. In some cases the physical length of the antenna can be "trimmed" to obtain a pure resistance. On the other hand, the addition of a series inductance or parallel capacitance can be used to cancel a residual capacitative or inductive reactance, respectively.

Now answer this question: What is an antenna designed to have?

Output: purely resistive feedpoint


Article: The study of genocide has mainly been focused towards the legal aspect of the term. By formally recognizing the act of genocide as a crime, involves the undergoing prosecution that begins with not only seeing genocide as outrageous past any moral standpoint but also may be a legal liability within international relations. When genocide is looked at in a general aspect it is viewed as the deliberate killing of a certain group. Yet is commonly seen to escape the process of trial and prosecution due to the fact that genocide is more often than not committed by the officials in power of a state or area. In 1648 before the term genocide had been coined, the Peace of Westphalia was established to protect ethnic, national, racial and in some instances religious groups. During the 19th century humanitarian intervention was needed due to the fact of conflict and justification of some of the actions executed by the military.

Question: In a general aspect, what is genocide viewed as?
Ans: the deliberate killing of a certain group


Here is a question about this article: In 1901 the accession of Edward VII saw new life breathed into the palace. The new King and his wife Queen Alexandra had always been at the forefront of London high society, and their friends, known as "the Marlborough House Set", were considered to be the most eminent and fashionable of the age. Buckingham Palace—the Ballroom, Grand Entrance, Marble Hall, Grand Staircase, vestibules and galleries redecorated in the Belle époque cream and gold colour scheme they retain today—once again became a setting for entertaining on a majestic scale but leaving some to feel King Edward's heavy redecorations were at odds with Nash's original work.
What is the answer to this question: Which king commissioned massive redecoration in the Belle Epoque cream and gold color scheme?
****
So... King Edward


The problem: Answer a question about this article:
In 1964, Turkey tried to invade Cyprus in response to the continuing Cypriot intercommunal violence. But Turkey was stopped by a strongly worded telegram from the US President Lyndon B. Johnson on 5 June, warning that the US would not stand beside Turkey in case of a consequential Soviet invasion of Turkish territory. Meanwhile, by 1964, enosis was a Greek policy that could not be abandoned; Makarios and the Greek prime minister Georgios Papandreou agreed that enosis should be the ultimate aim and King Constantine wished Cyprus "a speedy union with the mother country". Greece dispatched 10,000 troops to Cyprus to counter a possible Turkish invasion.
How many troops did Greece send to Cyprus?
****
The answer: 10,000


Problem: Please answer a question about the following article about American Idol:
The "Fan Save" was introduced in the fourteenth season. During the finals, viewers are given a five-minute window to vote for the contestants in danger of elimination by using their Twitter account to decide which contestant will move on to the next show, starting with the Top 8.
How do viewers vote for a contestant using Fan Save?
A: Twitter


Question: Read this and answer the question

Among the challenges being faced to improve the efficiency of LED-based white light sources is the development of more efficient phosphors. As of 2010, the most efficient yellow phosphor is still the YAG phosphor, with less than 10% Stoke shift loss. Losses attributable to internal optical losses due to re-absorption in the LED chip and in the LED packaging itself account typically for another 10% to 30% of efficiency loss. Currently, in the area of phosphor LED development, much effort is being spent on optimizing these devices to higher light output and higher operation temperatures. For instance, the efficiency can be raised by adapting better package design or by using a more suitable type of phosphor. Conformal coating process is frequently used to address the issue of varying phosphor thickness.

What is the most efficient yellow phosphor?
Answer:
YAG phosphor