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.

Q: LED lamps have been advocated as the newest and best environmental lighting method. According to the Energy Saving Trust, LED lamps use only 10% power compared to a standard incandescent bulb, where compact fluorescent lamps use 20% and energy saving halogen lamps 70%. The lifetime is also much longer — up to 50,000 hours. A downside is still the initial cost, which is higher than that of compact fluorescent lamps.

A: How much more power does a standard incandescent bulb use compared to LED?
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Q: New Haven is repeatedly referenced by Nick Carraway in F. Scott Fitzgerald's literary classic The Great Gatsby, as well as by fellow fictional Yale alumnus C. Montgomery Burns, a character from The Simpsons television show. A fictional native of New Haven is Alex Welch from the novella, The Odd Saga of the American and a Curious Icelandic Flock. The TV show Gilmore Girls is set (but not filmed) in New Haven and at Yale University, as are scenes in the film The Sisterhood of the Traveling Pants 2 (2008).

A: In what Fitzgerald classic does the fictional protagonist make repeated references to New Haven?
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Q: The almost constant wars among the Sumerian city-states for 2000 years helped to develop the military technology and techniques of Sumer to a high level. The first war recorded in any detail was between Lagash and Umma in c. 2525 BC on a stele called the Stele of the Vultures. It shows the king of Lagash leading a Sumerian army consisting mostly of infantry. The infantrymen carried spears, wore copper helmets, and carried rectangular shields. The spearmen are shown arranged in what resembles the phalanx formation, which requires training and discipline; this implies that the Sumerians may have made use of professional soldiers.

A:
What contributed to developing military technology for Sumer?
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