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: 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.

Answer: How much more power does a standard incandescent bulb use compared to LED?

Question: Honors and tributes flowed to Bell in increasing numbers as his most famous invention became ubiquitous and his personal fame grew. Bell received numerous honorary degrees from colleges and universities, to the point that the requests almost became burdensome. During his life he also received dozens of major awards, medals and other tributes. These included statuary monuments to both him and the new form of communication his telephone created, notably the Bell Telephone Memorial erected in his honor in Alexander Graham Bell Gardens in Brantford, Ontario, in 1917.

Answer: What did Bell receive from many centers of post-secondary education?

Question: In recent years, the School has put on a musical version of The Bacchae (October 2009) as well as productions of A Funny Thing Happened on the Way to the Forum (May 2010), The Cherry Orchard (February 2011), Joseph K (October 2011), Cyrano de Bergerac (May 2012), Macbeth (October 2012), London Assurance (May 2013) and Jerusalem (October 2013). Upcoming in May 2014 was a production of A Midsummer Night's Dream . Often girls from surrounding schools, such as St George's, Ascot, St Mary's School Ascot, Windsor Girls' School and Heathfield St Mary's School, are cast in female roles. Boys from the School are also responsible for the lighting, sound and stage management of all the productions, under the guidance of several professional full-time theatre staff.

Answer:
Who are cast in Eton's female roles in their productions?