The problem: Answer a question about this article:
In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a rotating needle, but the most common types are those with successively illuminated floor indications or LCDs. Likewise, a change of floors or an arrival at a floor is indicated by a sound, depending on the elevator.
Modern elevator position or floor indicaters often use what type of bulbs?
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The answer: LED


Problem: Please answer a question about the following article about Muammar Gaddafi:
On 16 April 1973, Gaddafi proclaimed the start of a "Popular Revolution" in a Zuwarah speech. He initiated this with a 5-point plan, the first point of which dissolved all existing laws, to be replaced by revolutionary enactments. The second point proclaimed that all opponents of the revolution had to be removed, while the third initiated an administrative revolution that Gaddafi proclaimed would remove all traces of bureaucracy and the bourgeoisie. The fourth point announced that the population must form People's Committees and be armed to defend the revolution, while the fifth proclaimed the beginning of a cultural revolution to expunge Libya of "poisonous" foreign influences. He began to lecture on this new phase of the revolution in Libya, Egypt, and France.
What happened to Libya's laws as a result of the first point of Gaddafi's speech?
A: dissolved


Question: Read this and answer the question

In 1913, Elmer McCollum discovered the first vitamins, fat-soluble vitamin A, and water-soluble vitamin B (in 1915; now known to be a complex of several water-soluble vitamins) and named vitamin C as the then-unknown substance preventing scurvy. Lafayette Mendel and Thomas Osborne also performed pioneering work on vitamins A and B. In 1919, Sir Edward Mellanby incorrectly identified rickets as a vitamin A deficiency because he could cure it in dogs with cod liver oil. In 1922, McCollum destroyed the vitamin A in cod liver oil, but found that it still cured rickets. Also in 1922, H.M. Evans and L.S. Bishop discover vitamin E as essential for rat pregnancy, originally calling it "food factor X" until 1925.

Which property was vitamin B found to have?
Answer: water-soluble


Problem: Burke supported the war against revolutionary France, seeing Britain as fighting on the side of the royalists and émigres in a civil war, rather than fighting against the whole nation of France. Burke also supported the royalist uprising in La Vendée, describing it on 4 November 1793 in a letter to William Windham, as "the sole affair I have much heart in". Burke wrote to Henry Dundas on 7 October urging him to send reinforcements there, as he viewed it as the only theatre in the war that might lead to a march on Paris. Dundas did not follow Burke's advice, however.
Who did Burke write to on Nov 4, 1793?
The answer is the following: William Windham


Pioneer Electronics later purchased the majority stake in the format and marketed it as both LaserVision (format name) and LaserDisc (brand name) in 1980, with some releases unofficially referring to the medium as "Laser Videodisc". Philips produced the players while MCA produced the discs. The Philips-MCA cooperation was not successful, and discontinued after a few years. Several of the scientists responsible for the early research (Richard Wilkinson, Ray Dakin and John Winslow) founded Optical Disc Corporation (now ODC Nimbus).
Who purchased the majority stake and re-marketed the product in 1980?
Pioneer Electronics


Here is a question about this article: At the end of the Second Anglo-Dutch War, the English gained New Amsterdam (New York) in North America in exchange for Dutch control of Run, an Indonesian island. Several intertribal wars among the Native Americans and some epidemics brought on by contact with the Europeans caused sizable population losses for the Lenape between the years 1660 and 1670. By 1700, the Lenape population had diminished to 200.
What is the answer to this question: How many Lenape lived in the area in 1700?
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So...
200