Please answer this: Extract the answer to the question from the following context. Question: What is being measured regarding a light fixture? Context: An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings. The more transparent the lighting fixture is, the higher efficacy. Shading the light will normally decrease efficacy but increase the directionality and the visual comfort probability.
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Answer: amount of usable light

Problem: Extract the answer to the question from the following context. Question: A of apella related to a public space is? Context: The etymology of the name is uncertain. The spelling (pronounced [a.pol.ln] in Classical Attic) had almost superseded all other forms by the beginning of the common era, but the Doric form Apellon (), is more archaic, derived from an earlier *j. It probably is a cognate to the Doric month Apellaios (), and the offerings apellaia () at the initiation of the young men during the family-festival apellai (). According to some scholars the words are derived from the Doric word apella (), which originally meant "wall," "fence for animals" and later "assembly within the limits of the square." Apella () is the name of the popular assembly in Sparta, corresponding to the ecclesia (). R. S. P. Beekes rejected the connection of the theonym with the noun apellai and suggested a Pre-Greek proto-form *Apalyun.

A: "assembly within the limits of the square

Problem: Given the question: Extract the answer to the question from the following context. Question: What do the new monks learn? Context: Vinaya is the specific moral code for monks and nuns. It includes the Patimokkha, a set of 227 rules for monks in the Theravadin recension. The precise content of the vinayapitaka (scriptures on Vinaya) differs slightly according to different schools, and different schools or subschools set different standards for the degree of adherence to Vinaya. Novice-monks use the ten precepts, which are the basic precepts for monastics.
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The answer is:
ten precepts

input question: Extract the answer to the question from the following context. Question: Who received the system last? Context: On August 1, 2012, Windows 8 (build 9200) was released to manufacturing with the build number 6.2.9200.16384 . Microsoft planned to hold a launch event on October 25, 2012 and release Windows 8 for general availability on the next day. However, only a day after its release to manufacturing, a copy of the final version of Windows 8 Enterprise N (a version for European markets lacking bundled media players to comply with a court ruling) leaked online, followed by leaks of the final versions of Windows 8 Pro and Enterprise a few days later. On August 15, 2012, Windows 8 was made available to download for MSDN and TechNet subscribers. Windows 8 was made available to Software Assurance customers on August 16, 2012. Windows 8 was made available for students with a DreamSpark Premium subscription on August 22, 2012, earlier than advertised.???
output answer: students with a DreamSpark Premium subscription

Extract the answer to the question from the following context. Question: What had to be proved before a drug could be sold? Context: The thalidomide tragedy resurrected Kefauver's bill to enhance drug regulation that had stalled in Congress, and the Kefauver-Harris Amendment became law on 10 October 1962. Manufacturers henceforth had to prove to FDA that their drugs were effective as well as safe before they could go on the US market. The FDA received authority to regulate advertising of prescription drugs and to establish good manufacturing practices. The law required that all drugs introduced between 1938 and 1962 had to be effective. An FDA - National Academy of Sciences collaborative study showed that nearly 40 percent of these products were not effective. A similarly comprehensive study of over-the-counter products began ten years later.
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Answer: drugs were effective as well as safe

Q: Extract the answer to the question from the following context. Question: What governance did the Provincial States exercise Context: In fact, there was an eighth province, the County of Drenthe, but this area was so poor it was exempt from paying federal taxes and as a consequence was denied representation in the States General. Each province was governed by the Provincial States, the main executive official (though not the official head of state) was a raadspensionaris. In times of war, the stadtholder, who commanded the army, would have more power than the raadspensionaris.
A:
Each province