Problem: Houston:

Centered on Post Oak Boulevard and Westheimer Road, the Uptown District boomed during the 1970s and early 1980s when a collection of mid-rise office buildings, hotels, and retail developments appeared along Interstate 610 west. Uptown became one of the most prominent instances of an edge city. The tallest building in Uptown is the 64-floor, 901-foot (275 m)-tall, Philip Johnson and John Burgee designed landmark Williams Tower (known as the Transco Tower until 1999). At the time of construction, it was believed to be the world's tallest skyscraper outside of a central business district. The new 20-story Skanska building and BBVA Compass Plaza are the newest office buildings built in Uptown after 30 years. The Uptown District is also home to buildings designed by noted architects I. M. Pei, Cesar Pelli, and Philip Johnson. In the late 1990s and early 2000s decade, there was a mini-boom of mid-rise and high-rise residential tower construction, with several over 30 stories tall. Since 2000 more than 30 high-rise buildings have gone up in Houston; all told, 72 high-rises tower over the city, which adds up to about 8,300 units. In 2002, Uptown had more than 23 million square feet (2,100,000 m) of office space with 16 million square feet (1,500,000 m) of Class A office space.

How many square feet of office space did Houston have in Uptown in 2002?
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A: 23 million

Problem: Dannatt criticised a remnant "Cold War mentality", with military expenditures based on retaining a capability against a direct conventional strategic threat; He said currently only 10% of the MoD's equipment programme budget between 2003 and 2018 was to be invested in the "land environment"at a time when Britain was engaged in land-based wars in Afghanistan and Iraq.
What two countries were also involved in the Cold War?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Standing out in Clarke's (and Newton's) response to Leibniz's arguments is the bucket argument: Water in a bucket, hung from a rope and set to spin, will start with a flat surface. As the water begins to spin in the bucket, the surface of the water will become concave. If the bucket is stopped, the water will continue to spin, and while the spin continues, the surface will remain concave. The concave surface is apparently not the result of the interaction of the bucket and the water, since the surface is flat when the bucket first starts to spin, it becomes concave as the water starts to spin, and it remains concave as the bucket stops.
What becomes flat when the bucket stops spinning?
A: unanswerable

Context and question: The Transat AG2R Race, held every alternate year, is an event which originates in Concarneau in Brittany, France, reaching St. Barthelemy. It is a boat race with boats of 10 m length with a single hull and with essential safety equipment. Each boat is navigated by two sailors. Kitesurfing and other water sports have also become popular on the island in recent years, especially at Grand Cul-de-Sac beach (Baie de Grand Cul de Sac) for windy sports as kitesurfing and Saint Jean Beach ( Baie de Saint Jean), Lorient, Toiny and Anse des Cayes for surfing. Tennis is also popular on the island and it has several tennis clubs, Tennis Clube de Flamboyant in Grand Cul-de-Sac, AJOE Tennis Club in Orient and ASCO in Colombier.
What type of vehicles participate in the AG2R Race?
Answer: boats

Question: Hyderabad was historically known as a pearl and diamond trading centre, and it continues to be known as the City of Pearls. Many of the city's traditional bazaars, including Laad Bazaar, Begum Bazaar and Sultan Bazaar, have remained open for centuries. However, industrialisation throughout the 20th century attracted major Indian manufacturing, research and financial institutions, including Bharat Heavy Electricals Limited, the National Geophysical Research Institute and the Centre for Cellular and Molecular Biology. Special economic zones dedicated to information technology have encouraged companies from across India and around the world to set up operations and the emergence of pharmaceutical and biotechnology industries in the 1990s led to the area's naming as India's "Genome Valley". With an output of US$74 billion, Hyderabad is the fifth-largest contributor to India's overall gross domestic product.
Is there an answer to this question: What is the economic output of Hyderabad?

Answer: US$74 billion

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Greenwich Mean Time (GMT) is an older standard, adopted starting with British railways in 1847. Using telescopes instead of atomic clocks, GMT was calibrated to the mean solar time at the Royal Observatory, Greenwich in the UK. Universal Time (UT) is the modern term for the international telescope-based system, adopted to replace "Greenwich Mean Time" in 1928 by the International Astronomical Union. Observations at the Greenwich Observatory itself ceased in 1954, though the location is still used as the basis for the coordinate system. Because the rotational period of Earth is not perfectly constant, the duration of a second would vary if calibrated to a telescope-based standard like GMT or UTin which a second was defined as a fraction of a day or year. The terms "GMT" and "Greenwich Mean Time" are sometimes used informally to refer to UT or UTC.
When was GMT adopted by the International Astronomical Union?
A:
unanswerable