instruction:
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.
question:
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
answer:
How old was Eric Temple Bell when Ross was an assistant professor at St. Louis University?


question:
Context: Hillingsø was made a sergeant in the Royal Danish Navy in 1955, but changed to serve in the Royal Danish Army Link Information: none Answer: none
answer:
In 1955 which had more total service members, the Royal Danish Navy or the Royal Danish Army?


question:
Context: Ma Dai is a character in the 14th-century historical novel Romance of the Three Kingdoms Link Information: Romance of the Three Kingdoms () is a 14th-century historical novel attributed to Luo Guanzhong. Answer:  Luo Guanzhong.
answer:

Who is the author of the novel that Ma Dai is a character in?