Problem: Strasbourg:

Between the German invasion of Poland on 1 September 1939 and the Anglo-French declaration of War against the German Reich on 3 September 1939, the entire city (a total of 120,000 people) was evacuated, like other border towns as well. Until the arrival of the Wehrmacht troops mid-June 1940, the city was, for ten months, completely empty, with the exception of the garrisoned soldiers. The Jews of Strasbourg had been evacuated to Perigueux and Limoges, the University had been evacuated to Clermont-Ferrand.

How long was the city completely empty?
---
A: ten months

Problem: The Britishby inclination as well as for practical reasonshad tended to avoid large-scale commitments of troops on the Continent. They sought to offset the disadvantage of this in Europe by allying themselves with one or more Continental powers whose interests were antithetical to those of their enemies, particularly France.:1516 By subsidising the armies of continental allies, Britain could turn London's enormous financial power to military advantage. In the Seven Years' War, the British chose as their principal partner the greatest general of the day, Frederick the Great of Prussia, then the rising power in central Europe, and paid Frederick substantial subsidies for his campaigns.:106 This was accomplished in the Diplomatic Revolution of 1756, in which Britain ended its long-standing alliance with Austria in favor of Prussia, leaving Austria to side with France. In marked contrast to France, Britain strove to prosecute the war actively in the colonies, taking full advantage of its naval power. :6466 The British pursued a dual strategy naval blockade and bombardment of enemy ports, and rapid movement of troops by sea. They harassed enemy shipping and attacked enemy colonies, frequently using colonists from nearby British colonies in the effort.
What country was driven into an alliance with France by the British pairing with Prussia?
---
Answer: leaving Austria to side with France

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
As federal judge Alex Kozinski has pointed out, binding precedent as we know it today simply did not exist at the time the Constitution was framed. Judicial decisions were not consistently, accurately, and faithfully reported on both sides of the Atlantic (reporters often simply rewrote or failed to publish decisions which they disliked), and the United Kingdom lacked a coherent court hierarchy prior to the end of the 19th century. Furthermore, English judges in the eighteenth century subscribed to now-obsolete natural law theories of law, by which law was believed to have an existence independent of what individual judges said. Judges saw themselves as merely declaring the law which had always theoretically existed, and not as making the law. Therefore, a judge could reject another judge's opinion as simply an incorrect statement of the law, in the way that scientists regularly reject each other's conclusions as incorrect statements of the laws of science.
What began at the time the Constitution was framed?
A: unanswerable

Context and question: In lossy audio compression, methods of psychoacoustics are used to remove non-audible (or less audible) components of the audio signal. Compression of human speech is often performed with even more specialized techniques; speech coding, or voice coding, is sometimes distinguished as a separate discipline from audio compression. Different audio and speech compression standards are listed under audio coding formats. Voice compression is used in internet telephony, for example, audio compression is used for CD ripping and is decoded by the audio players.
What is distinguished as a separate lossy from audio compression?
Answer: unanswerable

Question: In 1654, Otto von Guericke invented the first vacuum pump and conducted his famous Magdeburg hemispheres experiment, showing that teams of horses could not separate two hemispheres from which the air had been partially evacuated. Robert Boyle improved Guericke's design and with the help of Robert Hooke further developed vacuum pump technology. Thereafter, research into the partial vacuum lapsed until 1850 when August Toepler invented the Toepler Pump and Heinrich Geissler invented the mercury displacement pump in 1855, achieving a partial vacuum of about 10 Pa (0.1 Torr). A number of electrical properties become observable at this vacuum level, which renewed interest in further research.
Is there an answer to this question: What year was the Toepler Pump invented?

Answer: 1850

Problem: Education:

University education includes teaching, research, and social services activities, and it includes both the undergraduate level (sometimes referred to as tertiary education) and the graduate (or postgraduate) level (sometimes referred to as graduate school). Universities are generally composed of several colleges. In the United States, universities can be private and independent like Yale University; public and state-governed like the Pennsylvania State System of Higher Education; or independent but state-funded like the University of Virginia. A number of career specific courses are now available to students through the Internet.

What does University education not include?
---
A:
unanswerable