In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
Q: Context: the Treaty of Sevres, in which they were surrendered, had not yet been ratified by all the signatories. Link Information: The Treaty of Sevres () was one of a series of treaties that the Central Powers signed with the Allied Powers after their defeat in World War I. Answer: the Central Powers signed with the Allied Powers
A:
Who signed the Treaty of Sevres?