Problem: Hydrogen:

There exist two different spin isomers of hydrogen diatomic molecules that differ by the relative spin of their nuclei. In the orthohydrogen form, the spins of the two protons are parallel and form a triplet state with a molecular spin quantum number of 1 (1⁄2+1⁄2); in the parahydrogen form the spins are antiparallel and form a singlet with a molecular spin quantum number of 0 (1⁄2–1⁄2). At standard temperature and pressure, hydrogen gas contains about 25% of the para form and 75% of the ortho form, also known as the "normal form". The equilibrium ratio of orthohydrogen to parahydrogen depends on temperature, but because the ortho form is an excited state and has a higher energy than the para form, it is unstable and cannot be purified. At very low temperatures, the equilibrium state is composed almost exclusively of the para form. The liquid and gas phase thermal properties of pure parahydrogen differ significantly from those of the normal form because of differences in rotational heat capacities, as discussed more fully in spin isomers of hydrogen. The ortho/para distinction also occurs in other hydrogen-containing molecules or functional groups, such as water and methylene, but is of little significance for their thermal properties.

When hydrogen gas is in standard temperature and pressure, what form is it considered in>
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A: normal


Problem: By the Treaty of Paris (1763), France regained the five establishments captured by the British during the war (Pondichéry, Mahe, Karikal, Yanam and Chandernagar) but was prevented from erecting fortifications and keeping troops in Bengal (art. XI). Elsewhere in India, the French were to remain a military threat, particularly during the War of American Independence, and up to the capture of Pondichéry in 1793 at the outset of the French Revolutionary Wars without any military presence. Although these small outposts remained French possessions for the next two hundred years, French ambitions on Indian territories were effectively laid to rest, thus eliminating a major source of economic competition for the company.
The Treaty of Paris prevented France from keeping troops in what location?
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Answer: Bengal


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Comcast Corporation, formerly registered as Comcast Holdings,[note 1] is an American multinational mass media company and is the largest broadcasting and largest cable company in the world by revenue. It is the second largest pay-TV company after the AT&T-DirecTV acquisition, largest cable TV company and largest home Internet service provider in the United States, and the nation's third largest home telephone service provider. Comcast services U.S. residential and commercial customers in 40 states and the District of Columbia. The company's headquarters are located in Philadelphia, Pennsylvania.
Where is the AT&T headquarters?
A: unanswerable


Context and question: At low frequencies (such as AM broadcast), arrays of vertical towers are used to achieve directionality  and they will occupy large areas of land. For reception, a long Beverage antenna can have significant directivity. For non directional portable use, a short vertical antenna or small loop antenna works well, with the main design challenge being that of impedance matching. With a vertical antenna a loading coil at the base of the antenna may be employed to cancel the reactive component of impedance; small loop antennas are tuned with parallel capacitors for this purpose.
Why is this specific antenna type used?
Answer: achieve directionality


Question: Electrocution was the preferred method of execution during the 20th century. Electric chairs have commonly been nicknamed Old Sparky; however, Alabama's electric chair became known as the "Yellow Mama" due to its unique color. Some, particularly in Florida, were noted for malfunctions, which caused discussion of their cruelty and resulted in a shift to lethal injection as the preferred method of execution. Although lethal injection dominates as a method of execution, some states allow prisoners on death row to choose the method used to execute them.
Is there an answer to this question: What state notably had electric chair malfunctions?

Answer: Florida


Problem: Greece:

Since the Kallikratis programme reform entered into effect on 1 January 2011, Greece has consisted of thirteen regions subdivided into a total of 325 municipalities. The 54 old prefectures and prefecture-level administrations have been largely retained as sub-units of the regions. Seven decentralized administrations group one to three regions for administrative purposes on a regional basis. There is also one autonomous area, Mount Athos (Greek: Agio Oros, "Holy Mountain"), which borders the region of Central Macedonia.

What went into effect on January 1, 2011?
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A:
Kallikratis programme reform