Problem: Eton College:

As with other public schools, a scheme was devised towards the end of the 19th century to familiarize privileged schoolboys with social conditions in deprived areas. The project of establishing an 'Eton Mission' in the crowded district of Hackney Wick in east London was started at the beginning of 1880, and lasted until 1971 when it was decided that a more local project (at Dorney) would be more realistic. However over the years much money was raised for the Eton Mission, a fine church by G. F. Bodley was erected, many Etonians visited, and stimulated among other things the Eton Manor Boys' Club, a notable rowing club which has survived the Mission itself, and the 59 Club for motorcyclists.

Why did construction of Eton Mission cease in 1971?
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A: it was decided that a more local project (at Dorney) would be more realistic


Problem: Burke believed that property was essential to human life. Because of his conviction that people desire to be ruled and controlled, the division of property formed the basis for social structure, helping develop control within a property-based hierarchy. He viewed the social changes brought on by property as the natural order of events, which should be taking place as the human race progressed. With the division of property and the class system, he also believed that it kept the monarch in check to the needs of the classes beneath the monarch. Since property largely aligned or defined divisions of social class, class too, was seen as natural—part of a social agreement that the setting of persons into different classes, is the mutual benefit of all subjects. Concern for property is not Burke's only influence. As Christopher Hitchens summarises, "If modern conservatism can be held to derive from Burke, it is not just because he appealed to property owners in behalf of stability but also because he appealed to an everyday interest in the preservation of the ancestral and the immemorial."
What did Burke believe was against the natural order of events?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Modern electrification systems take AC energy from a power grid which is delivered to a locomotive and converted to a DC voltage to be used by traction motors. These motors may either be DC motors which directly use the DC or they may be 3-phase AC motors which require further conversion of the DC to 3-phase AC (using power electronics). Thus both systems are faced with the same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. Where should this conversion take place and at what voltage and current (AC or DC) should the power flow to the locomotive? And how does all this relate to energy-efficiency? Both the transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space is limited and losses are significantly higher. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for.
Modern electrification systems take DC energy from what?
A: unanswerable


Context and question: Most birds scoop water in their beaks and raise their head to let water run down the throat. Some species, especially of arid zones, belonging to the pigeon, finch, mousebird, button-quail and bustard families are capable of sucking up water without the need to tilt back their heads. Some desert birds depend on water sources and sandgrouse are particularly well known for their daily congregations at waterholes. Nesting sandgrouse and many plovers carry water to their young by wetting their belly feathers. Some birds carry water for chicks at the nest in their crop or regurgitate it along with food. The pigeon family, flamingos and penguins have adaptations to produce a nutritive fluid called crop milk that they provide to their chicks.
How do nesting sandgrouse carry water to their young?
Answer: wetting their belly feathers


Question: By the time of the Uruk period (c. 4100–2900 BC calibrated), the volume of trade goods transported along the canals and rivers of southern Mesopotamia facilitated the rise of many large, stratified, temple-centered cities (with populations of over 10,000 people) where centralized administrations employed specialized workers. It is fairly certain that it was during the Uruk period that Sumerian cities began to make use of slave labor captured from the hill country, and there is ample evidence for captured slaves as workers in the earliest texts. Artifacts, and even colonies of this Uruk civilization have been found over a wide area—from the Taurus Mountains in Turkey, to the Mediterranean Sea in the west, and as far east as central Iran.
Is there an answer to this question: When did Sumerians stop using slave labor?

Answer: unanswerable


Once a year between 2008–2012 the European Formula One Grand Prix took place in the Valencia Street Circuit. Valencia is among with Barcelona, Porto and Monte Carlo the only European cities ever to host Formula One World Championship Grands Prix on public roads in the middle of cities. The final race in 2012 European Grand Prix saw an extremely popular winner, since home driver Fernando Alonso won for Ferrari in spite of starting halfway down the field. The Valencian Community motorcycle Grand Prix (Gran Premi de la Comunitat Valenciana de motociclisme) is part of the Grand Prix motorcycle racing season at the Circuit Ricardo Tormo (also known as Circuit de Valencia). Periodically the Spanish round of the Deutsche Tourenwagen Masters touring car racing Championship (DTM) is held in Valencia.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is another name for the Circuit Recardo Tormo?
Ah, so..
Circuit de Valencia