input question: Extract the answer to the question from the following context. Question: A substance that regulates and ensures the temperature of a device does not exceed safe values is generally called? Context: 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.???
output answer: coolant

input question: Extract the answer to the question from the following context. Question: Which of the following does NOT raise efficiency: Stoke Shift loss, better package design, or a more suitable type of phosphor? Context: Among the challenges being faced to improve the efficiency of LED-based white light sources is the development of more efficient phosphors. As of 2010, the most efficient yellow phosphor is still the YAG phosphor, with less than 10% Stoke shift loss. Losses attributable to internal optical losses due to re-absorption in the LED chip and in the LED packaging itself account typically for another 10% to 30% of efficiency loss. Currently, in the area of phosphor LED development, much effort is being spent on optimizing these devices to higher light output and higher operation temperatures. For instance, the efficiency can be raised by adapting better package design or by using a more suitable type of phosphor. Conformal coating process is frequently used to address the issue of varying phosphor thickness.???
output answer: Stoke shift loss

input question: Extract the answer to the question from the following context. Question: How were the battle lines drawn? Context: During the English Civil War the majority of Londoners supported the Parliamentary cause. After an initial advance by the Royalists in 1642 culminating in the battles of Brentford and Turnham Green, London was surrounded by defensive perimeter wall known as the Lines of Communication. The lines were built by an up to 20,000 people, and were completed in under two months. The fortifications failed their only test when the New Model Army entered London in 1647, and they were levelled by Parliament the same year.???
output answer: the majority of Londoners supported the Parliamentary cause

input question: Extract the answer to the question from the following context. Question: What didn't the people in his party like about his Chief of Staff? Context: Schwarzenegger then went against the advice of fellow Republican strategists and appointed a Democrat, Susan Kennedy, as his Chief of Staff. Schwarzenegger gradually moved towards a more politically moderate position, determined to build a winning legacy with only a short time to go until the next gubernatorial election.???
output answer:
Democrat