This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
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Question: Most light bulbs have either clear or coated glass. The coated glass bulbs have a white powdery substance on the inside called kaolin. Kaolin, or kaolinite, is a white, chalky clay in a very fine powder form, that is blown in and electrostatically deposited on the interior of the bulb. It diffuses the light emitted from the filament, producing a more gentle and evenly distributed light. Manufacturers may add pigments to the kaolin to adjust the characteristics of the final light emitted from the bulb. Kaolin diffused bulbs are used extensively in interior lighting because of their comparatively gentle light. Other kinds of colored bulbs are also made, including the various colors used for "party bulbs", Christmas tree lights and other decorative lighting. These are created by coloring the glass with a dopant; which is often a metal like cobalt (blue) or chromium (green). Neodymium-containing glass is sometimes used to provide a more natural-appearing light.

Answer: What is the powdery substance in coated glass light bulbs?


Question: Another major division within Islamism is between what Graham E. Fuller has described as the fundamentalist "guardians of the tradition" (Salafis, such as those in the Wahhabi movement) and the "vanguard of change and Islamic reform" centered around the Muslim Brotherhood. Olivier Roy argues that "Sunni pan-Islamism underwent a remarkable shift in the second half of the 20th century" when the Muslim Brotherhood movement and its focus on Islamisation of pan-Arabism was eclipsed by the Salafi movement with its emphasis on "sharia rather than the building of Islamic institutions," and rejection of Shia Islam. Following the Arab Spring, Roy has described Islamism as "increasingly interdependent" with democracy in much of the Arab Muslim world, such that "neither can now survive without the other." While Islamist political culture itself may not be democratic, Islamists need democratic elections to maintain their legitimacy. At the same time, their popularity is such that no government can call itself democratic that excludes mainstream Islamist groups.

Answer: What exists between fundamentalist Islamism and reformist Islamism?


Question: Construction of the chapel, originally intended to be slightly over twice as long, with eighteen - or possibly seventeen - bays (there are eight today) was stopped when Henry VI was deposed. Only the Quire of the intended building was completed. Eton's first Headmaster, William Waynflete, founder of Magdalen College, Oxford and previously Head Master of Winchester College, built the ante-chapel that finishes the Chapel today. The important wall paintings in the Chapel and the brick north range of the present School Yard also date from the 1480s; the lower storeys of the cloister, including College Hall, had been built between 1441 and 1460.

Answer:
Who was Eton's first Headmaster?