The problem: Answer a question about this article:
Portugal’s national energy transmission company, Redes Energéticas Nacionais (REN), uses sophisticated modeling to predict weather, especially wind patterns, and computer programs to calculate energy from the various renewable-energy plants. Before the solar/wind revolution, Portugal had generated electricity from hydropower plants on its rivers for decades. New programs combine wind and water: wind-driven turbines pump water uphill at night, the most blustery period; then the water flows downhill by day, generating electricity, when consumer demand is highest. Portugal’s distribution system is also now a two-way street. Instead of just delivering electricity, it draws electricity from even the smallest generators, like rooftop solar panels. The government aggressively encouraged such contributions by setting a premium price for those who buy rooftop-generated solar electricity.
What is the name of Portugal's national energy transmission company?
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The answer: Redes Energéticas Nacionais (REN)


The problem: Answer a question about this article:
Sony Music Entertainment Inc. (sometimes known as Sony Music or by the initials, SME) is an American music corporation managed and operated by Sony Corporation of America (SCA), a subsidiary of Japanese conglomerate Sony Corporation. In 1929, the enterprise was first founded as American Record Corporation (ARC) and, in 1938, was renamed Columbia Recording Corporation, following ARC's acquisition by CBS. In 1966, the company was reorganized to become CBS Records. In 1987, Sony Corporation of Japan bought the company, and in 1991, renamed it SME. It is the world's second largest recorded music company, after Universal Music Group.
What company is the only group larger than Sony Music Entertainment?
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The answer: Universal Music Group.


The problem: Answer a question about this article:
The Greek national football team, ranking 12th in the world in 2014 (and having reached a high of 8th in the world in 2008 and 2011), were crowned European Champions in Euro 2004 in one of the biggest upsets in the history of the sport and became one of the most successful national teams in European football, being one of only nine national teams to have won the UEFA European Championship. The Greek Super League is the highest professional football league in the country comprising eighteen teams. The most successful are Olympiacos, Panathinaikos, AEK Athens and PAOK.
Who is one of the most successful teams in the Greek Super League?
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The answer: Olympiacos


The problem: Answer a question about this article:
The ground-attack aircraft of the USAF are designed to attack targets on the ground and are often deployed as close air support for, and in proximity to, U.S. ground forces. The proximity to friendly forces require precision strikes from these aircraft that are not possible with bomber aircraft listed below. They are typically deployed as close air support to ground forces, their role is tactical rather than strategic, operating at the front of the battle rather than against targets deeper in the enemy's rear.
What type of aircraft is not appropriate to be used in close proximity of US ground troops? 
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The answer:
bomber aircraft