Input: Article: By the late 1990s, blue LEDs became widely available. They have an active region consisting of one or more InGaN quantum wells sandwiched between thicker layers of GaN, called cladding layers. By varying the relative In/Ga fraction in the InGaN quantum wells, the light emission can in theory be varied from violet to amber. Aluminium gallium nitride (AlGaN) of varying Al/Ga fraction can be used to manufacture the cladding and quantum well layers for ultraviolet LEDs, but these devices have not yet reached the level of efficiency and technological maturity of InGaN/GaN blue/green devices. If un-alloyed GaN is used in this case to form the active quantum well layers, the device will emit near-ultraviolet light with a peak wavelength centred around 365 nm. Green LEDs manufactured from the InGaN/GaN system are far more efficient and brighter than green LEDs produced with non-nitride material systems, but practical devices still exhibit efficiency too low for high-brightness applications.[citation needed]

Now answer this question: What does AlGaN stand for?

Output: Aluminium gallium nitride

Input: Article: In 2014, the FAA changed a long-standing approach to air traffic control candidates that eliminated preferences based on training and experience at flight schools in favor of a personality test open to anyone irrespective of experience. The move was made to increase flight traffic controller racial diversity. Before the change, candidates who had completed coursework at participating colleges and universities could be "fast-tracked" for consideration. The agency eliminated that program and instead switched to an open system to the general public, with no need for any experience or even a college degree. Instead, applicants could take "a biographical questionnaire" that many applicants found baffling.

Now answer this question: What was now favored instead of training and experince at flight schools?

Output: personality test

Input: Article: The Football Association Premier League Ltd (FAPL) is operated as a corporation and is owned by the 20 member clubs. Each club is a shareholder, with one vote each on issues such as rule changes and contracts. The clubs elect a chairman, chief executive, and board of directors to oversee the daily operations of the league. The current chairman is Sir Dave Richards, who was appointed in April 1999, and the chief executive is Richard Scudamore, appointed in November 1999. The former chairman and chief executive, John Quinton and Peter Leaver, were forced to resign in March 1999 after awarding consultancy contracts to former Sky executives Sam Chisholm and David Chance. The Football Association is not directly involved in the day-to-day operations of the Premier League, but has veto power as a special shareholder during the election of the chairman and chief executive and when new rules are adopted by the league.

Now answer this question: Who is the current chairman of the Premier League?

Output:
Sir Dave Richards