In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[EX Q]: For what reason would it be easy to burn a chair?, Context: Wood has always been used extensively for furniture, such as chairs and beds. It is also used for tool handles and cutlery, such as chopsticks, toothpicks, and other utensils, like the wooden spoon.
[EX A]: Wood

[EX Q]: Which of the following is NOT a goal of phorphor LED development: higher light output, optical losses, or higher operation temperatures?, 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.
[EX A]: optical losses

[EX Q]: What Koppen classification is given to Southampton?, Context: As with the rest of the UK, Southampton experiences an oceanic climate (Köppen Cfb). Its southerly, low lying and sheltered location ensures it is among the warmer, sunnier cities in the UK. It has held the record for the highest temperature in the UK for June at 35.6 °C (96.1 °F) since 1976.
[EX A]:
Cfb