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.

Example Input: Context: Ross became an assistant professor at St. Louis University in 1935 Link Information: Eric Temple Bell (February 7, 1883 – December 21, 1960)  Answer: 52
Example Output: How old was Eric Temple Bell when Ross was an assistant professor at St. Louis University?

Example Input: Context: Warrington spent most of his career on the Texas frontier and served under Colonel Ranald S. Mackenzie during the Texas-Indian Wars of the 1870s. Link Information: On February 25, 1871, he assumed command of the 4th U.S. Cavalry at Fort Richardson in Jacksboro, Texas. Answer: the 4th U.S. Cavalry
Example Output: What units did the Colonel Warrington served under inn the Texas-Indian Wars command?

Example Input: Context: Modern history accepts this gateway as one of three constructed by Yaroslav the Wise. The golden gates were built in 1017-1024 (6545 by the Byzantine calendar) at about the same time the Saint Sophia Cathedral was erected. Link Information: none Answer: none
Example Output:
Was the ruler who constructed the golden gates still alive when the Saint Sophia Cathedral was completed?