You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

Example input: Powdered sugar, also called confectioners' sugar, icing sugar, and icing cake, is a finely ground sugar produced by milling granulated sugar into a powdered state. It usually contains a small amount of anti-caking agent to prevent clumping and improve flow. Although most often produced in a factory, powdered sugar can also be made by processing ordinary granulated sugar in a coffee grinder, or by crushing it by hand in a mortar and pestle.
Example output: is confectionary sugar the same as powdered sugar?
Example explanation: The question is a yes/no question, and it is answerable based on the given passage.
Q: A signature (/ˈsɪɡnətʃər/; from Latin: signare, ``to sign'') is a handwritten (and often stylized) depiction of someone's name, nickname, or even a simple ``X'' or other mark that a person writes on documents as a proof of identity and intent. The writer of a signature is a signatory or signer. Similar to a handwritten signature, a signature work describes the work as readily identifying its creator. A signature may be confused with an autograph, which is chiefly an artistic signature. This can lead to confusion when people have both an autograph and signature and as such some people in the public eye keep their signatures private whilst fully publishing their autograph.
A:
can an x be used as a signature?