Problem: Vacuum:

The above explanation is merely a simple introduction to vacuum pumping, and is not representative of the entire range of pumps in use. Many variations of the positive displacement pump have been developed, and many other pump designs rely on fundamentally different principles. Momentum transfer pumps, which bear some similarities to dynamic pumps used at higher pressures, can achieve much higher quality vacuums than positive displacement pumps. Entrapment pumps can capture gases in a solid or absorbed state, often with no moving parts, no seals and no vibration. None of these pumps are universal; each type has important performance limitations. They all share a difficulty in pumping low molecular weight gases, especially hydrogen, helium, and neon.

Dynamic pumps often work without moving parts, seals and what?
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A: unanswerable


Problem: In the late 13th and early 14th centuries, a process took place – primarily in Italy but partly also in the Empire – that historians have termed a 'commercial revolution'. Among the innovations of the period were new forms of partnership and the issuing of insurance, both of which contributed to reducing the risk of commercial ventures; the bill of exchange and other forms of credit that circumvented the canonical laws for gentiles against usury, and eliminated the dangers of carrying bullion; and new forms of accounting, in particular double-entry bookkeeping, which allowed for better oversight and accuracy.
What new form of accounting was created during the late 13th and early 14th centuries?
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Answer: double-entry bookkeeping


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In Australia, the Prime Minister is expected to step down if s/he loses the majority support of his/her party under a spill motion as have many such as Tony Abbott, Julia Gillard and Kevin Rudd.
What motion requires the head of State to step down in Australia?
A: unanswerable


Context and question: The Bengali Renaissance refers to a social reform movement during the nineteenth and early twentieth centuries in the Bengal region of India during the period of British rule dominated by English educated Bengali Hindus. The Bengal Renaissance can be said to have started with Raja Ram Mohan Roy (1772–1833) and ended with Rabindranath Tagore (1861–1941), although many stalwarts thereafter continued to embody particular aspects of the unique intellectual and creative output of the region. Nineteenth century Bengal was a unique blend of religious and social reformers, scholars, literary giants, journalists, patriotic orators, and scientists, all merging to form the image of a renaissance, and marked the transition from the 'medieval' to the 'modern'.
What group lead the Bengali Renaissance?
Answer: English educated Bengali Hindus


Question: The law of civil procedure governs process in all judicial proceedings involving lawsuits between private parties. Traditional common law pleading was replaced by code pleading in 24 states after New York enacted the Field Code in 1850 and code pleading in turn was subsequently replaced again in most states by modern notice pleading during the 20th century. The old English division between common law and equity courts was abolished in the federal courts by the adoption of the Federal Rules of Civil Procedure in 1938; it has also been independently abolished by legislative acts in nearly all states. The Delaware Court of Chancery is the most prominent of the small number of remaining equity courts.
Is there an answer to this question: What did the Federal Rules of Civil Procedure abolish?

Answer: The old English division between common law and equity courts


Question: His Book of Healing became available in Europe in partial Latin translation some fifty years after its composition, under the title Sufficientia, and some authors have identified a "Latin Avicennism" as flourishing for some time, paralleling the more influential Latin Averroism, but suppressed by the Parisian decrees of 1210 and 1215. Avicenna's psychology and theory of knowledge influenced William of Auvergne, Bishop of Paris and Albertus Magnus, while his metaphysics had an impact on the thought of Thomas Aquinas.
Is there an answer to this question: What book of healing did Ibn Sina write in Latin?

Answer:
unanswerable