instruction:
You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.
question:
Federal law requires background checks for commercial gun sales, but an exemption exists for private-party sales whereby ``Any person may sell a firearm to an unlicensed resident of the State where he resides as long as he does not know or have reasonable cause to believe the person is prohibited from receiving or possessing firearms under Federal law.'' Under federal law, private-party sellers are not required to perform background checks on buyers, record the sale, or ask for identification, whether at a gun show or other venue. This is in contrast to sales by gun stores and other Federal Firearms License (FFL) holders, who are required to perform background checks and record all sales on almost all buyers, regardless of whether the venue is their business location or a gun show. Some states have passed laws to require background checks for private sales with limited exceptions. Access to the National Instant Criminal Background Check System (NICS) is limited to FFL holders.
answer:
is a background check required to buy a gun at a gun show?


question:
In mathematical analysis, the maxima and minima (the respective plurals of maximum and minimum) of a function, known collectively as extrema (the plural of extremum), are the largest and smallest value of the function, either within a given range (the local or relative extrema) or on the entire domain of a function (the global or absolute extrema). Pierre de Fermat was one of the first mathematicians to propose a general technique, adequality, for finding the maxima and minima of functions.
answer:
is relative extrema the same as local extrema?


question:
Angel food cake, or angel cake, is a type of sponge cake made with egg whites, flour, and sugar. A whipping agent, such as cream of tartar, is commonly added. It differs from other cakes because it uses no butter. Its structure comes from whipped egg whites known as a protein foam. Angel food cake originated in the United States and first became popular in the late 19th century. It gained its unique reputation along with its name due to its light and fluffy texture, said to resemble the ``food of the angels''.
answer:

is angel food cake batter supposed to be foam?