Problem: Classical music:

During the earlier medieval period, the vocal music from the liturgical genre, predominantly Gregorian chant, was monophonic, using a single, unaccompanied vocal melody line. Polyphonic vocal genres, which used multiple independent vocal melodies, began to develop during the high medieval era, becoming prevalent by the later 13th and early 14th century.

When did the Polyphonic vocal genre begin to develop?
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A: during the high medieval era

Problem: Pfizer, once the city's second largest employer, operated a large pharmaceutical research facility on the northeast side of Ann Arbor. On 22 January 2007, Pfizer announced it would close operations in Ann Arbor by the end of 2008. The facility was previously operated by Warner-Lambert and, before that, Parke-Davis. In December 2008, the University of Michigan Board of Regents approved the purchase of the facilities, and the university anticipates hiring 2,000 researchers and staff during the next 10 years. The city is the home of other research and engineering centers, including those of Lotus Engineering, General Dynamics and the National Oceanic and Atmospheric Administration (NOAA). Other research centers sited in the city are the United States Environmental Protection Agency's National Vehicle and Fuel Emissions Laboratory and the Toyota Technical Center. The city is also home to National Sanitation Foundation International (NSF International), the nonprofit non-governmental organization that develops generally accepted standards for a variety of public health related industries and subject areas.
What company announced it would close operations by the end of 2007?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Lower Manhattan is the third-largest central business district in the United States and is home to the New York Stock Exchange, on Wall Street, and the NASDAQ, at 165 Broadway, representing the world's largest and second largest stock exchanges, respectively, when measured both by overall average daily trading volume and by total market capitalization of their listed companies in 2013. Investment banking fees on Wall Street totaled approximately $40 billion in 2012, while in 2013, senior New York City bank officers who manage risk and compliance functions earned as much as $324,000 annually. In fiscal year 201314, Wall Street's securities industry generated 19% of New York State's tax revenue. New York City remains the largest global center for trading in public equity and debt capital markets, driven in part by the size and financial development of the U.S. economy.:3132 In July 2013, NYSE Euronext, the operator of the New York Stock Exchange, took over the administration of the London interbank offered rate from the British Bankers Association. New York also leads in hedge fund management; private equity; and the monetary volume of mergers and acquisitions. Several investment banks and investment mangers headquartered in Manhattan are important participants in other global financial centers.:3435 New York is also the principal commercial banking center of the United States.
The NASDAQ is located on what street in NYC?
A: 165 Broadway

Context and question: The governments of Australia and New Zealand responded to the 2011 fresh-water crisis by supplying temporary desalination plants, and assisted in the repair of the existing desalination unit that was donated by Japan in 2006. In response to the 2011 drought, Japan funded the purchase of a 100 m3/d desalination plant and two portable 10 m3/d plants as part of its Pacific Environment Community (PEC) program. Aid programs from the European Union and Australia also provided water tanks as part of the longer term solution for the storage of available fresh water.
What did aid from the European Union provide during the drought on Tuvalu?
Answer: water tanks

Question: Time is one of the seven fundamental physical quantities in both the International System of Units and International System of Quantities. Time is used to define other quantitiessuch as velocityso defining time in terms of such quantities would result in circularity of definition. An operational definition of time, wherein one says that observing a certain number of repetitions of one or another standard cyclical event (such as the passage of a free-swinging pendulum) constitutes one standard unit such as the second, is highly useful in the conduct of both advanced experiments and everyday affairs of life. The operational definition leaves aside the question whether there is something called time, apart from the counting activity just mentioned, that flows and that can be measured. Investigations of a single continuum called spacetime bring questions about space into questions about time, questions that have their roots in the works of early students of natural philosophy.
Is there an answer to this question: Time is one of the fundamental physical quantities in which two systems?

Answer: the International System of Units and International System of Quantities

The area between Belvidere Street, Interstate 195, Interstate 95, and the river, which includes Virginia Commonwealth University, is socioeconomically and architecturally diverse. North of Broad Street, the Carver and Newtowne West neighborhoods are demographically similar to neighboring Jackson Ward, with Carver experiencing some gentrification due to its proximity to VCU. The affluent area between the Boulevard, Main Street, Broad Street, and VCU, known as the Fan, is home to Monument Avenue, an outstanding collection of Victorian architecture, and many students. West of the Boulevard is the Museum District, the location of the Virginia Historical Society and the Virginia Museum of Fine Arts. South of the Downtown Expressway are Byrd Park, Maymont, Hollywood Cemetery, the predominantly black working class Randolph neighborhood, and white working class Oregon Hill. Cary Street between Interstate 195 and the Boulevard is a popular commercial area called Carytown.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): The neighborhood of Newtowne West is north of what street?
Ah, so..
Broad