Definition: 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.
Input: Context: The body of the Unknown Warrior was carried to London in South Eastern and Chatham Railway General Utility Van No.132, which had previously carried the bodies of Edith Cavell and Charles Fryatt. Link Information:

Edith Louisa Cavell (; 4 December 1865 12 October 1915 Answer: 9
Output:
How much time was between the deaths of the people carried by General Utility Van No. 132 before the Unknown Warrior?