The problem: Answer a question about this article:
Hydrogen is commonly used in power stations as a coolant in generators due to a number of favorable properties that are a direct result of its light diatomic molecules. These include low density, low viscosity, and the highest specific heat and thermal conductivity of all gases.
Why is it used as a coolant?
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The answer: favorable properties that are a direct result of its light diatomic molecules

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The act created the National Military Establishment (renamed Department of Defense in 1949), which was composed of three subordinate Military Departments, namely the Department of the Army, the Department of the Navy, and the newly created Department of the Air Force. Prior to 1947, the responsibility for military aviation was shared between the Army (for land-based operations), the Navy (for sea-based operations from aircraft carriers and amphibious aircraft), and the Marine Corps (for close air support of infantry operations). The 1940s proved to be important in other ways as well. In 1947, Captain Chuck Yeager broke the sound barrier in his X-1 rocket-powered aircraft, beginning a new era of aeronautics in America.
What does the US Navy's responsibilities include?
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The answer: sea-based operations from aircraft carriers and amphibious aircraft

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Roman government was headed by two consuls, elected annually by the citizens and advised by a senate composed of appointed magistrates. As Roman society was very hierarchical by modern standards, the evolution of the Roman government was heavily influenced by the struggle between the patricians, Rome's land-holding aristocracy, who traced their ancestry to the founding of Rome, and the plebeians, the far more numerous citizen-commoners. Over time, the laws that gave patricians exclusive rights to Rome's highest offices were repealed or weakened, and leading plebeian families became full members of the aristocracy. The leaders of the Republic developed a strong tradition and morality requiring public service and patronage in peace and war, making military and political success inextricably linked. Many of Rome's legal and legislative structures (later codified into the Justinian Code, and again into the Napoleonic Code) can still be observed throughout Europe and much of the world in modern nation states and international organizations.
Who elected consuls in the Roman government?
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The answer: citizens

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Miami is also considered a "hot spot" for dance music, Freestyle, a style of dance music popular in the 80's and 90's heavily influenced by Electro, hip-hop, and disco. Many popular Freestyle acts such as Pretty Tony, Debbie Deb, Stevie B, and Expose, originated in Miami. Indie/folk acts Cat Power and Iron & Wine are based in the city, while alternative hip hop artist Sage Francis, electro artist Uffie, and the electroclash duo Avenue D were born in Miami, but musically based elsewhere. Also, ska punk band Against All Authority is from Miami, and rock/metal bands Nonpoint and Marilyn Manson each formed in neighboring Fort Lauderdale. Cuban American female recording artist, Ana Cristina, was born in Miami in 1985.
What is Ana Cristina's ethnicity?
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The answer:
Cuban American