Problem: Please answer a question about the following article about Madonna (entertainer):
Following Die Another Day, Madonna collaborated with fashion photographer Steven Klein in 2003 for an exhibition installation named X-STaTIC Pro=CeSS. It included photography from a photo shoot in W magazine, and seven video segments. The installation ran from March to May in New York's Deitch Projects gallery. It traveled the world in an edited form. The same year, Madonna released her ninth studio album, American Life, which was based on her observations of American society; it received mixed reviews. She commented, "[American Life] was like a trip down memory lane, looking back at everything I've accomplished and all the things I once valued and all the things that were important to me." Larry Flick from The Advocate felt that "American Life is an album that is among her most adventurous and lyrically intelligent" while condemning it as "a lazy, half-arsed effort to sound and take her seriously." The title song peaked at number 37 on the Hot 100. Its original music video was canceled as Madonna thought that the video, featuring violence and war imagery, would be deemed unpatriotic since America was then at war with Iraq. With four million copies sold worldwide, American Life was the lowest-selling album of her career at that point.
American Life reached which number at the Hot 100?
A: 37
Problem: Please answer a question about the following article about London:
London is a major international air transport hub with the busiest city airspace in the world. Eight airports use the word London in their name, but most traffic passes through six of these. London Heathrow Airport, in Hillingdon, West London, is the busiest airport in the world for international traffic, and is the major hub of the nation's flag carrier, British Airways. In March 2008 its fifth terminal was opened. There were plans for a third runway and a sixth terminal; however, these were cancelled by the Coalition Government on 12 May 2010.
How many airports are affiliated with London and incorporate the word London in their names?
A: Eight
Problem: Please answer a question about the following article about Near East:
In 1853 the Russian Empire on behalf of the Slavic Balkan states began to question the very existence of the Ottoman Empire. The result was the Crimean War, 1853–1856, in which the British Empire and the French Empire supported the Ottoman Empire in its struggle against the incursions of the Russian Empire. Eventually, the Ottoman Empire lost control of the Balkan region.
When was the Crimean War?
A: 1853–1856
Problem: Please answer a question about the following article about Incandescent light bulb:
A very small amount of water vapor inside a light bulb can significantly affect lamp darkening. Water vapor dissociates into hydrogen and oxygen at the hot filament. The oxygen attacks the tungsten metal, and the resulting tungsten oxide particles travel to cooler parts of the lamp. Hydrogen from water vapor reduces the oxide, reforming water vapor and continuing this water cycle. The equivalent of a drop of water distributed over 500,000 lamps will significantly increase darkening. Small amounts of substances such as zirconium are placed within the lamp as a getter to react with any oxygen that may bake out of the lamp components during operation.
How much water is necessary to result in this darkening affect?
A:
The equivalent of a drop of water distributed over 500,000 lamps