Problem: Philadelphia:

Irish, Italians, Polish, Germans, English, and Greeks are the largest ethnic European groups in the city. Philadelphia has the second-largest Irish and Italian populations in the United States, after New York City. South Philadelphia remains one of the largest Italian neighborhoods in the country and is home to the Italian Market. The Pennsport neighborhood and Gray's Ferry section of South Philadelphia, home to many Mummer clubs, are well known as Irish neighborhoods. The Kensington section, Port Richmond, and Fishtown have historically been heavily Irish and Polish. Port Richmond is well known in particular as the center of the Polish immigrant and Polish-American community in Philadelphia, and it remains a common destination for Polish immigrants. Northeast Philadelphia, although known for its Irish and Irish-American population, is also home to a large Jewish and Russian population. Mount Airy in Northwest Philadelphia also contains a large Jewish community, while nearby Chestnut Hill is historically known as an Anglo-Saxon Protestant stronghold.

Which part of the city has a large Jewish area?
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A: Mount Airy


Problem: Holes through a PCB are typically drilled with small-diameter drill bits made of solid coated tungsten carbide. Coated tungsten carbide is recommended since many board materials are very abrasive and drilling must be high RPM and high feed to be cost effective. Drill bits must also remain sharp so as not to mar or tear the traces. Drilling with high-speed-steel is simply not feasible since the drill bits will dull quickly and thus tear the copper and ruin the boards. The drilling is performed by automated drilling machines with placement controlled by a drill tape or drill file. These computer-generated files are also called numerically controlled drill (NCD) files or "Excellon files". The drill file describes the location and size of each drilled hole.
Drill bits must remain dull why?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In Rajasthan, Jodhpur and Kota are two major educational hubs. Kota is known for its quality education in preparation of various competitive exams, coaching for medical and engineering exams while Jodhpur is home to many higher educational institutions like IIT, AIIMS, National Law University, Sardar Patel Police University, National institute of Fashion Technology, MBM Engineering College etc. Kota is popularly referred to as, "coaching capital of India". Other major educational institutions are Birla Institute of Technology and Science Pilani, Malaviya National Institute of Technology Jaipur, IIM Udaipur r and LNMIIT. Rajasthan has nine universities and more than 250 colleges, 55,000 primary and 7,400 secondary schools. There are 41 engineering colleges with an annual enrollment of about 11,500 students. Apart from above there 41 Private universities like Amity University Rajasthan, Jaipur,Manipal University Jaipur, OPJS University, Churu, Mody University of Technology and Science Lakshmangarh (Women's University, Sikar), RNB Global University, Bikaner. The state has 23 polytechnic colleges and 152 Industrial Training Institutes (ITIs) that impart vocational training.
What term is Birla referred to as?
A: unanswerable


Context and question: Annelids' cuticles are made of collagen fibers, usually in layers that spiral in alternating directions so that the fibers cross each other. These are secreted by the one-cell deep epidermis (outermost skin layer). A few marine annelids that live in tubes lack cuticles, but their tubes have a similar structure, and mucus-secreting glands in the epidermis protect their skins. Under the epidermis is the dermis, which is made of connective tissue, in other words a combination of cells and non-cellular materials such as collagen. Below this are two layers of muscles, which develop from the lining of the coelom (body cavity): circular muscles make a segment longer and slimmer when they contract, while under them are longitudinal muscles, usually four distinct strips, whose contractions make the segment shorter and fatter. Some annelids also have oblique internal muscles that connect the underside of the body to each side.
What does 'coelom' mean?
Answer: (body cavity


Question: The fluid in the coelomata contains coelomocyte cells that defend the animals against parasites and infections. In some species coelomocytes may also contain a respiratory pigment – red hemoglobin in some species, green chlorocruorin in others (dissolved in the plasma) – and provide oxygen transport within their segments. Respiratory pigment is also dissolved in the blood plasma. Species with well-developed septa generally also have blood vessels running all long their bodies above and below the gut, the upper one carrying blood forwards while the lower one carries it backwards. Networks of capillaries in the body wall and around the gut transfer blood between the main blood vessels and to parts of the segment that need oxygen and nutrients. Both of the major vessels, especially the upper one, can pump blood by contracting. In some annelids the forward end of the upper blood vessel is enlarged with muscles to form a heart, while in the forward ends of many earthworms some of the vessels that connect the upper and lower main vessels function as hearts. Species with poorly developed or no septa generally have no blood vessels and rely on the circulation within the coelom for delivering nutrients and oxygen.
Is there an answer to this question: What runs the length of annelids' brains with well-developed septa?

Answer: unanswerable


Problem: Dissolution of the Soviet Union:

In the first session of the new Congress of People's Deputies, from May 25 to June 9, hardliners retained control but reformers used the legislature as a platform for debate and criticism – which was broadcast live and uncensored. This transfixed the population; nothing like this freewheeling debate had ever been witnessed in the U.S.S.R. On May 29, Yeltsin managed to secure a seat on the Supreme Soviet, and in the summer he formed the first opposition, the Inter-Regional Deputies Group, composed of Russian nationalists and liberals. Composing the final legislative group in the Soviet Union, those elected in 1989 played a vital part in reforms and the eventual breakup of the Soviet Union during the next two years.

Who used the legislative session to debate and criticize?
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A:
reformers