Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: Which collection category has the sub-categories of [Piggy bank]?
answer: disneyana
answer type: Collection category.
auxiliary information: Piggy bank is the traditional name of a coin container usually used by children. The piggy bank is known to collectors as a "still bank" as opposed to the "mechanical banks" popular in the early 20th century. These items are also often used by corporations for promotional purposes. The use of the name 'piggy bank' gave rise to its widely-recognized 'pig' shape, and many financial services companies use piggy banks as logos for their savings products. Piggy banks are typically made of ceramic or porcelain. They are generally painted and serve as a pedagogical device to teach the rudiments of thrift and savings to children; money can be easily inserted. Many piggy banks have a rubber plug located on the underside; others are made of vinyl and have a removable nose for easy coin access. Some incorporate electronic systems which calculate the amount of money deposited. Some piggy banks have no opening besides the slot for inserting coins, which will lead to smashing the piggy bank with a hammer or by other means, to obtain the money within.

[Piggy bank] is a sub-category of which collection category?