Problem: Melbourne:

In response to attribution of recent climate change, the City of Melbourne, in 2002, set a target to reduce carbon emissions to net zero by 2020 and Moreland City Council established the Zero Moreland program, however not all metropolitan municipalities have followed, with the City of Glen Eira notably deciding in 2009 not to become carbon neutral. Melbourne has one of the largest urban footprints in the world due to its low density housing, resulting in a vast suburban sprawl, with a high level of car dependence and minimal public transport outside of inner areas. Much of the vegetation within the city are non-native species, most of European origin, and in many cases plays host to invasive species and noxious weeds. Significant introduced urban pests include the common myna, feral pigeon, brown rat, European wasp, common starling and red fox. Many outlying suburbs, particularly towards the Yarra Valley and the hills to the north-east and east, have gone for extended periods without regenerative fires leading to a lack of saplings and undergrowth in urbanised native bushland. The Department of Sustainability and Environment partially addresses this problem by regularly burning off. Several national parks have been designated around the urban area of Melbourne, including the Mornington Peninsula National Park, Port Phillip Heads Marine National Park and Point Nepean National Park in the south east, Organ Pipes National Park to the north and Dandenong Ranges National Park to the east. There are also a number of significant state parks just outside Melbourne. Responsibility for regulating pollution falls under the jurisdiction of the EPA Victoria and several local councils. Air pollution, by world standards, is classified as being good. Summer and autumn are the worst times of year for atmospheric haze in the urban area.

In what year did Melbourne set a target to reduce carbon emissions to net zero?
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A: 2002

Problem: Stereophonic sound recording, which attempts to provide a more natural listening experience by reproducing the spatial locations of sound sources in the horizontal plane, was the natural extension to monophonic recording, and attracted various alternative engineering attempts. The ultimately dominant "45/45" stereophonic record system was invented by Alan Blumlein of EMI in 1931 and patented the same year. EMI cut the first stereo test discs using the system in 1933 (see Bell Labs Stereo Experiments of 1933) although the system was not exploited commercially until much later.
How was the commercial success of stereo sound in the 1930s?
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Answer: was not exploited commercially until much later.

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Although the firearms used by the infantry, particularly machine guns, can be used to engage low altitude air targets, on occasion with notable success, their effectiveness is generally limited and the muzzle flashes reveal infantry positions. Speed and altitude of modern jet aircraft limit target opportunities, and critical systems may be armored in aircraft designed for the ground attack role. Adaptations of the standard autocannon, originally intended for air-to-ground use, and heavier artillery systems were commonly used for most anti-aircraft gunnery, starting with standard pieces on new mountings, and evolving to specially designed guns with much higher performance prior to World War II.
Heavier artillery systems were typically used for what?
A: most anti-aircraft gunnery

Context and question: During the Perestroika era, The Law on the Status of the Estonian Language was adopted in January 1989. The collapse of the Soviet Union led to the restoration of Republic of Estonia's independence. Estonian went back to being the only state language in Estonia which in practice meant that use of Estonian was promoted while the use of Russian was discouraged.
Following the Soviet collapse what became the only official Estonian Language?
Answer: Estonian

Question: Tom Robinson is the chief example among several innocents destroyed carelessly or deliberately throughout the novel. However, scholar Christopher Metress connects the mockingbird to Boo Radley: "Instead of wanting to exploit Boo for her own fun (as she does in the beginning of the novel by putting on gothic plays about his history), Scout comes to see him as a 'mockingbird'that is, as someone with an inner goodness that must be cherished." The last pages of the book illustrate this as Scout relates the moral of a story Atticus has been reading to her, and in allusions to both Boo Radley and Tom Robinson states about a character who was misunderstood, "when they finally saw him, why he hadn't done any of those things ... Atticus, he was real nice," to which he responds, "Most people are, Scout, when you finally see them."
Is there an answer to this question: According to Atticus, most people are how when you truly view them?

Answer: real nice

Problem: 2008 Summer Olympics torch relay:

Macao: The event was held in Macau on May 3. It was the first time that the Olympic torch had traveled to Macau. A ceremony was held at Macau Fisherman's Wharf. Afterward, the torch traveled through Macau, passing by a number of landmarks including A-Ma Temple, Macau Tower, Ponte Governador Nobre de Carvalho, Ponte de Sai Van, Macau Cultural Centre, Macau Stadium and then back to the Fisherman's Wharf for the closing ceremony. Parts of the route near Ruins of St. Paul's and Taipa was shortened due to large crowds of supporters blocking narrow streets. A total of 120 torchbearers participated in this event including casino tycoon Stanley Ho. Leong Hong Man and Leong Heng Teng were the first and last torchbearer in the relay respectively. An article published on Macao Daily News criticized that the list of the torchbearers could not fully represent the Macanese and that there were too many non-athletes among the torchbearers. (some of whom had already been torchbearers of other sporting events)

Where was the torch ceremony held in Macao?
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A:
Macau Fisherman's Wharf