This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
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Question: Passage: In November 2004, following a period of turmoil caused by the revelation that Shell had been overstating its oil reserves, it was announced that the Shell Group would move to a single capital structure, creating a new parent company to be named Royal Dutch Shell plc, with its primary listing on the London Stock Exchange, a secondary listing on the Amsterdam Stock Exchange, its headquarters and tax residency in The Hague, Netherlands and its registered office in London. The unification was completed on 20 July 2005 and the original owners delisted their companies from the respective exchanges. On 20 July 2005, the Shell Transport & Trading Company plc was delisted from the LSE, where as, Royal Dutch Petroleum Company from NYSE on 18 November 2005. The shares of the company were issued at a 60/40 advantage for the shareholders of Royal Dutch in line with the original ownership of the Shell Group. Question: What was the name of the Shell Group's new parent company?

Answer: Royal Dutch Shell plc


Question: Passage: Israel, and The US Air Force, in conjunction with the members of NATO, has developed significant tactics for air defence suppression. Dedicated weapons such as anti-radiation missiles and advanced electronics intelligence and electronic countermeasures platforms seek to suppress or negate the effectiveness of an opposing air-defence system. It is an arms race; as better jamming, countermeasures and anti-radiation weapons are developed, so are better SAM systems with ECCM capabilities and the ability to shoot down anti-radiation missiles and other munitions aimed at them or the targets they are defending. Question: As better weapons are created, what systems continue to improve as well to counter them?

Answer: SAM systems with ECCM capabilities


Question: Passage: For "closed systems" with no external source or sink of energy, the first law of thermodynamics states that a system's energy is constant unless energy is transferred in or out by mechanical work or heat, and that no energy is lost in transfer. This means that it is impossible to create or destroy energy. While heat can always be fully converted into work in a reversible isothermal expansion of an ideal gas, for cyclic processes of practical interest in heat engines the second law of thermodynamics states that the system doing work always loses some energy as waste heat. This creates a limit to the amount of heat energy that can do work in a cyclic process, a limit called the available energy. Mechanical and other forms of energy can be transformed in the other direction into thermal energy without such limitations. The total energy of a system can be calculated by adding up all forms of energy in the system. Question: The limit to the amount of heat energy that can do work in a cyclic process is known as what?

Answer:
available energy