Problem: Treaty:

After the preamble comes numbered articles, which contain the substance of the parties' actual agreement. Each article heading usually encompasses a paragraph. A long treaty may further group articles under chapter headings.

What follows the preamble in a treaty?
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A: numbered articles


Problem: The quality of a vacuum is indicated by the amount of matter remaining in the system, so that a high quality vacuum is one with very little matter left in it. Vacuum is primarily measured by its absolute pressure, but a complete characterization requires further parameters, such as temperature and chemical composition. One of the most important parameters is the mean free path (MFP) of residual gases, which indicates the average distance that molecules will travel between collisions with each other. As the gas density decreases, the MFP increases, and when the MFP is longer than the chamber, pump, spacecraft, or other objects present, the continuum assumptions of fluid mechanics do not apply. This vacuum state is called high vacuum, and the study of fluid flows in this regime is called particle gas dynamics. The MFP of air at atmospheric pressure is very short, 70 nm, but at 100 mPa (~6997100000000000000♠1×10−3 Torr) the MFP of room temperature air is roughly 100 mm, which is on the order of everyday objects such as vacuum tubes. The Crookes radiometer turns when the MFP is larger than the size of the vanes.
What is particle gas dynamics?
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Answer: study of fluid flows


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Polish term "szlachta" designated the formalized, hereditary noble class of Polish-Lithuanian Commonwealth. In official Latin documents of the old Commonwealth, hereditary szlachta are referred to as "nobilitas" and are indeed the equivalent in legal status of the English nobility.
What are two adjectives that best describe the szlachta?
A: formalized, hereditary


Context and question: The consolidation of the Bronx into New York City proceeded in two stages. In 1873, the state legislature annexed Kingsbridge, West Farms and Morrisania to New York, effective in 1874; the three towns were abolished in the process. In 1895, three years before New York's consolidation with Brooklyn, Queens and Staten Island, the whole of the territory east of the Bronx River, including the Town of Westchester (which had voted in 1894 against consolidation) and portions of Eastchester and Pelham, were annexed to the city. City Island, a nautical community, voted to join the city in 1896.
When did New York City annex West Farms?
Answer: 1873


Question: Charleston annually hosts Spoleto Festival USA founded by Gian Carlo Menotti, a 17-day art festival featuring over 100 performances by individual artists in a variety of disciplines. The Spoleto Festival is internationally recognized as America's premier performing arts festival. The annual Piccolo Spoleto festival takes place at the same time and features local performers and artists, with hundreds of performances throughout the city. Other festivals and events include Historic Charleston Foundation's Festival of Houses and Gardens and Charleston Antiques Show, the Taste of Charleston, The Lowcountry Oyster Festival, the Cooper River Bridge Run, The Charleston Marathon, Southeastern Wildlife Exposition (SEWE), Charleston Food and Wine Festival, Charleston Fashion Week, the MOJA Arts Festival, and the Holiday Festival of Lights (at James Island County Park), and the Charleston International Film Festival.
Is there an answer to this question: The Holiday Festival of Lights aren't held where?

Answer: unanswerable


In 1865, when the Bell family moved to London, Bell returned to Weston House as an assistant master and, in his spare hours, continued experiments on sound using a minimum of laboratory equipment. Bell concentrated on experimenting with electricity to convey sound and later installed a telegraph wire from his room in Somerset College to that of a friend. Throughout late 1867, his health faltered mainly through exhaustion. His younger brother, Edward "Ted," was similarly bed-ridden, suffering from tuberculosis. While Bell recovered (by then referring to himself in correspondence as "A.G. Bell") and served the next year as an instructor at Somerset College, Bath, England, his brother's condition deteriorated. Edward would never recover. Upon his brother's death, Bell returned home in 1867. His older brother Melville had married and moved out. With aspirations to obtain a degree at University College London, Bell considered his next years as preparation for the degree examinations, devoting his spare time at his family's residence to studying.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what year did the Bell's move to London?
Ah, so..
1865