In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

[Q]: The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 0 C (32 F), the speed of sound is 331.2 metres per second (1,087 ft / s; 1,192 km / h; 741 mph; 644 kn). At 20 C (68 F), the speed of sound is 343 metres per second (1,125 ft / s; 1,235 km / h; 767 mph; 667 kn), or a kilometre in 2.91 s or a mile in 4.69 s.
[A]: what is the speed of the sound in air

[Q]: In the United States, Congress has not attempted to enact any nationwide federal smoking ban. Therefore, smoking bans in the United States are entirely a product of state and local criminal and occupational safety and health laws. As a result, the existence and aggressiveness of smoking bans varies widely throughout the United States, ranging from total bans (even outdoors), to no regulation of smoking at all. Jurisdictions in the greater South tend to have the least restrictive smoking bans or no statewide bans at all. Of the 60 most populated cities in the United States, all but 17 ban smoking in all bars and restaurants.
[A]: when was smoking banned in hospitals in usa

[Q]: Hydrogen peroxide is a chemical compound with the formula H O. In its pure form, it is a pale blue, clear liquid, slightly more viscous than water. Hydrogen peroxide is the simplest peroxide (a compound with an oxygen -- oxygen single bond). It is used as an oxidizer, bleaching agent and antiseptic. Concentrated hydrogen peroxide, or 'high-test peroxide', is a reactive oxygen species and has been used as a propellant in rocketry. Its chemistry is dominated by the nature of its unstable peroxide bond.
[A]:
what is the chemical composition of hydrogen peroxide