Problem: Transistor:

FETs are divided into two families: junction FET (JFET) and insulated gate FET (IGFET). The IGFET is more commonly known as a metal–oxide–semiconductor FET (MOSFET), reflecting its original construction from layers of metal (the gate), oxide (the insulation), and semiconductor. Unlike IGFETs, the JFET gate forms a p–n diode with the channel which lies between the source and drain. Functionally, this makes the n-channel JFET the solid-state equivalent of the vacuum tube triode which, similarly, forms a diode between its grid and cathode. Also, both devices operate in the depletion mode, they both have a high input impedance, and they both conduct current under the control of an input voltage.

What kind of FET is mass produced?
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A: unanswerable


Problem: Cuba, like many Spanish territories, wanted to break free from Spain. A pro-independence movement in Cuba was supported by the U.S., and Cuban guerrilla leaders wanted annexation to the United States, but Cuban revolutionary leader José Martí called for Cuban nationhood. When the U.S. battleship Maine sank in Havana Harbor, the U.S. blamed Spain and the Spanish–American War broke out in 1898. After the U.S. won, Spain relinquished claim of sovereignty over territories, including Cuba. The U.S. administered Cuba as a protectorate until 1902. Several decades later in 1959, the corrupt Cuban government of U.S.-backed Fulgencio Batista was overthrown by Fidel Castro. Castro installed a Marxist–Leninist government allied with the Soviet Union, which has been in power ever since.
When did Fidel Castro overthrow the Cuban government?
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Answer: 1959


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Genome-wide association studies have found 27 genetic variants that are associated with an increased risk of myocardial infarction. Strongest association of MI has been found with the 9p21 genomic locus, which contains genes CDKN2A & 2B, although the single nucleotide polymorphisms that are implicated are within a non-coding region. The majority of these variants are in regions that have not been previously implicated in coronary artery disease. The following genes have an association with MI: PCSK9, SORT1, MIA3, WDR12, MRAS, PHACTR1, LPA, TCF21, MTHFDSL, ZC3HC1, CDKN2A, 2B, ABO, PDGF0, APOA5, MNF1ASM283, COL4A1, HHIPC1, SMAD3, ADAMTS7, RAS1, SMG6, SNF8, LDLR, SLC5A3, MRPS6, KCNE2.
What was implicated in the coding region of 9p21?
A: unanswerable


Context and question: Despite some concerns, western vegetarians and vegans have not been found to suffer from overt zinc deficiencies any more than meat-eaters. Major plant sources of zinc include cooked dried beans, sea vegetables, fortified cereals, soyfoods, nuts, peas, and seeds. However, phytates in many whole-grains and fiber in many foods may interfere with zinc absorption and marginal zinc intake has poorly understood effects. The zinc chelator phytate, found in seeds and cereal bran, can contribute to zinc malabsorption. There is some evidence to suggest that more than the US RDA (15 mg) of zinc daily may be needed in those whose diet is high in phytates, such as some vegetarians. These considerations must be balanced against the fact that there is a paucity of adequate zinc biomarkers, and the most widely used indicator, plasma zinc, has poor sensitivity and specificity. Diagnosing zinc deficiency is a persistent challenge.
Where is zinc chelator phytate found?
Answer: seeds and cereal bran,


Question: The county has a long tradition of supplying freestone and building stone. Quarries at Doulting supplied freestone used in the construction of Wells Cathedral. Bath stone is also widely used. Ralph Allen promoted its use in the early 18th century, as did Hans Price in the 19th century, but it was used long before then. It was mined underground at Combe Down and Bathampton Down Mines, and as a result of cutting the Box Tunnel, at locations in Wiltshire such as Box. Bath stone is still used on a reduced scale today, but more often as a cladding rather than a structural material. Further south, Hamstone is the colloquial name given to stone from Ham Hill, which is also widely used in the construction industry. Blue Lias has been used locally as a building stone and as a raw material for lime mortar and Portland cement. Until the 1960s, Puriton had Blue Lias stone quarries, as did several other Polden villages. Its quarries also supplied a cement factory at Dunball, adjacent to the King's Sedgemoor Drain. Its derelict, early 20th century remains, was removed when the M5 motorway was constructed in the mid-1970s. Since the 1920s, the county has supplied aggregates. Foster Yeoman is Europe's large supplier of limestone aggregates, with quarries at Merehead Quarry. It has a dedicated railway operation, Mendip Rail, which is used to transport aggregates by rail from a group of Mendip quarries.
Is there an answer to this question: In what village is Foster Yeoman headquartered?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Today, Estonian society encourages liberty and liberalism, with popular commitment to the ideals of the limited government, discouraging centralised power and corruption. The Protestant work ethic remains a significant cultural staple, and free education is a highly prized institution. Like the mainstream culture in the other Nordic countries, Estonian culture can be seen to build upon the ascetic environmental realities and traditional livelihoods, a heritage of comparatively widespread egalitarianism out of practical reasons (see: Everyman's right and universal suffrage), and the ideals of closeness to nature and self-sufficiency (see: summer cottage).
What virtues does modern Estonian society promote?
A:
liberty and liberalism