You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.

Q: try H.U.D or the housing authority or habitat for huminity

A: looking for low income housing programs for young widows with children?
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Q: chocolate and other such candies

A: what makes your mouth water?
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Q: A gas-operated firearm operates on a similar principle of a car engine. When a round is fired, expanding gases propel the bullet out of the barrel, along with most of the gas. But a small portion of the gas is siphoned off into a seperate gas tube either above or below the barrel and forces a piston backwards, which in turn pushes back the bolt carrier, ejects the spent brass, and is pushed forward again by a recoil spring, stripping a fresh round out of the magazine and pushes it into the chamber to be fired. A blowback- operated firearm is comparatively simple. When a round is fired in a blowback-operated firearm, the bolt is forced back by the recoil energy of the spent brass itself, eliminating the need for a piston. The downiside to the simpler design is increased recoil, since not all of the expanding gases in a gas-operated firearm actually exit the barrel, there is less gas pushing the muzzle up and back. the blowback system is often found on smaller weapons, such as pistols and sub-machine guns, because it is simpler and requires fewer parts, which allows a weapon to be small and lightweight.

A:
Whats the difference between gas operated and blowback operated Guns??
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