Problem: Czech language:

In Czech, nouns and adjectives are declined into one of seven grammatical cases. Nouns are inflected to indicate their use in a sentence. A nominative–accusative language, Czech marks subject nouns with nominative case and object nouns with accusative case. The genitive case marks possessive nouns and some types of movement. The remaining cases (instrumental, locative, vocative and dative) indicate semantic relationships, such as secondary objects, movement or position (dative case) and accompaniment (instrumental case). An adjective's case agrees with that of the noun it describes. When Czech children learn their language's declension patterns, the cases are referred to by number:

What nouns does Czech use the accusative case to mark?
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A: object


Problem: In a switching circuit, the idea is to simulate, as near as possible, the ideal switch having the properties of open circuit when off, short circuit when on, and an instantaneous transition between the two states. Parameters are chosen such that the "off" output is limited to leakage currents too small to affect connected circuitry; the resistance of the transistor in the "on" state is too small to affect circuitry; and the transition between the two states is fast enough not to have a detrimental effect.
What might stop a switch from transitioning quickly? 
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Over two centuries after the removal of the capital to Beijing, Nanjing was destined to become the capital of a Ming emperor one more time. After the fall of Beijing to Li Zicheng's rebel forces and then to the Manchu-led Qing dynasty in the spring of 1644, the Ming prince Zhu Yousong was enthroned in Nanjing in June 1644 as the Hongguang Emperor. His short reign was described by later historians as the first reign of the so-called Southern Ming dynasty.
When was Zhu Yousong enthroned?
A: in June 1644


Context and question: The BeiDou Navigation Satellite System (BDS, simplified Chinese: 北斗卫星导航系统; traditional Chinese: 北斗衛星導航系統; pinyin: Běidǒu wèixīng dǎoháng xìtǒng) is a Chinese satellite navigation system. It consists of two separate satellite constellations – a limited test system that has been operating since 2000, and a full-scale global navigation system that is currently under construction.
The BeiDou Navigation Satellite System consists of 3 separate what? 
Answer: unanswerable


Question: By 750, the feast of her conception was widely celebrated in the Byzantine East, under the name of the Conception (active) of Saint Anne. In the West it was known as the feast of the Conception (passive) of Mary, and was associated particularly with the Normans, whether these introduced it directly from the East or took it from English usage. The spread of the feast, by now with the adjective "Immaculate" attached to its title, met opposition on the part of some, on the grounds that sanctification was possible only after conception. Critics included Saints Bernard of Clairvaux, Albertus Magnus and Thomas Aquinas. Other theologians defended the expression "Immaculate Conception", pointing out that sanctification could be conferred at the first moment of conception in view of the foreseen merits of Christ, a view held especially by Franciscans.
Is there an answer to this question: Who was against all of the celebrations of Mary 's her birth ?

Answer: Critics included Saints Bernard of Clairvaux, Albertus Magnus and Thomas Aquinas.


In classical Greece, Anaxagoras asserted that a divine reason (mind) gave order to the seeds of the universe, and Plato extended the Greek belief of ideal forms to his metaphysical theory of forms (ideai, "ideas"). The forms on earth are imperfect duplicates of the intellectual celestial ideas. The Greek words oida (οἶδα, "(I) know") and eidos (εἶδος, "species") have the same root as the word idea (ἰδέα), indicating how the Greek mind moved from the gift of the senses, to the principles beyond the senses. The artists in Plato's time moved away from his theories and art tends to be a mixture of naturalism with stylization. The Greek sculptors considered the senses more important, and the proportions were used to unite the sensible with the intellectual.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is one Greek word that has the same root as the word idea?
Ah, so..
eidos