input question: 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.???
output answer: amount of usable light

Extract the answer to the question from the following context. Question: What crops are grown besides potatoes, fruits and vegetables, buckwheat and barley? Context: The main crops grown are barley, wheat, buckwheat, rye, potatoes, and assorted fruits and vegetables. Tibet is ranked the lowest among China's 31 provinces on the Human Development Index according to UN Development Programme data. In recent years, due to increased interest in Tibetan Buddhism, tourism has become an increasingly important sector, and is actively promoted by the authorities. Tourism brings in the most income from the sale of handicrafts. These include Tibetan hats, jewelry (silver and gold), wooden items, clothing, quilts, fabrics, Tibetan rugs and carpets. The Central People's Government exempts Tibet from all taxation and provides 90% of Tibet's government expenditures. However most of this investment goes to pay migrant workers who do not settle in Tibet and send much of their income home to other provinces.
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Answer: recent

Q: Extract the answer to the question from the following context. Question: The European top division include native as well as this type of player on teams? Context: Football is the most popular sport amongst Somalis. Important competitions are the Somalia League and Somalia Cup. The multi-ethnic Ocean Stars, Somalia's national team, first participated at the Olympic Games in 1972 and has sent athletes to compete in most Summer Olympic Games since then. The equally diverse Somali beach soccer team also represents the country in international beach soccer competitions. In addition, several international footballers such as Mohammed Ahamed Jama, Liban Abdi, Ayub Daud and Abdisalam Ibrahim have played in European top divisions.
A: international

Question: Extract the answer to the question from the following context. Question: What are discrete inheritable units now known as? Context: The existence of discrete inheritable units was first suggested by Gregor Mendel (18221884). From 1857 to 1864, he studied inheritance patterns in 8000 common edible pea plants, tracking distinct traits from parent to offspring. He described these mathematically as 2n combinations where n is the number of differing characteristics in the original peas. Although he did not use the term gene, he explained his results in terms of discrete inherited units that give rise to observable physical characteristics. This description prefigured the distinction between genotype (the genetic material of an organism) and phenotype (the visible traits of that organism). Mendel was also the first to demonstrate independent assortment, the distinction between dominant and recessive traits, the distinction between a heterozygote and homozygote, and the phenomenon of discontinuous inheritance.
Answer: gene

[Q]: Extract the answer to the question from the following context. Question: Who is credited with abandoning Beyonce during the beginning of her difficulty? Context: LeToya Luckett and Roberson became unhappy with Mathew's managing of the band and eventually were replaced by Farrah Franklin and Michelle Williams. Beyonce experienced depression following the split with Luckett and Roberson after being publicly blamed by the media, critics, and blogs for its cause. Her long-standing boyfriend left her at this time. The depression was so severe it lasted for a couple of years, during which she occasionally kept herself in her bedroom for days and refused to eat anything. Beyonce stated that she struggled to speak about her depression because Destiny's Child had just won their first Grammy Award and she feared no one would take her seriously. Beyonce would later speak of her mother as the person who helped her fight it. Franklin was dismissed, leaving just Beyonce, Rowland, and Williams.
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[A]: Her long-standing boyfriend

Problem: Given the question: Extract the answer to the question from the following context. Question: How many manufactures signed the MoU? Context: In June 2009, many of the world's largest mobile phone manufacturers signed an EC-sponsored Memorandum of Understanding (MoU), agreeing to make most data-enabled mobile phones marketed in the European Union compatible with a common External Power Supply (EPS). The EU's common EPS specification (EN 62684:2010) references the USB Battery Charging standard and is similar to the GSMA/OMTP and Chinese charging solutions. In January 2011, the International Electrotechnical Commission (IEC) released its version of the (EU's) common EPS standard as IEC 62684:2011.
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The answer is:
many