instruction:
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.
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:
During the December 2014 press conference announcing the start of filming, Aston Martin and Eon unveiled the new DB10 as the official car for the film. The DB10 was designed in collaboration between Aston Martin and the filmmakers, with only 10 being produced especially for Spectre as a celebration of the 50th anniversary of the company's association with the franchise. Only eight of those 10 were used for the film, however; the remaining two were used for promotional work. After modifying the Jaguar C-X75 for the film, Williams F1 carried the 007 logo on their cars at the 2015 Mexican Grand Prix, with the team playing host to the cast and crew ahead of the Mexican premiere of the film.
answer:
Which companies revealed Spectre's official car?


question:
On July 23, 1990, Leonid Kravchuk was elected to replace Ivashko as parliament chairman. On July 30, Parliament adopted a resolution on military service ordering Ukrainian soldiers "in regions of national conflict such as Armenia and Azerbaijan" to return to Ukrainian territory. On August 1, Parliament voted overwhelmingly to shut down the Chernobyl Nuclear Power Plant. On August 3, it adopted a law on the economic sovereignty of the Ukrainian republic. On August 19, the first Ukrainian Catholic liturgy in 44 years was celebrated at St. George Cathedral. On September 5–7, the International Symposium on the Great Famine of 1932–1933 was held in Kiev. On September 8, The first "Youth for Christ" rally since 1933 took place held in Lviv, with 40,000 participants. In September 28–30, the Green Party of Ukraine held its founding congress. On September 30, nearly 100,000 people marched in Kiev to protest against the new union treaty proposed by Gorbachev.
answer:
Who would succeed Ivashko as the chairman of Parliament?