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: Karel Bossart was born on February 9, 1904 in Antwerp, Belgium. Link Information: The earliest mention of Antwerp dates from the 4th century.

In the 4th century Answer: 17

A: How old is the city where Bossart was born?
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Q: Context: He moved back to his homeland and graduated first at the Annenschule Link Information: none Answer: none

A: In what year did Mikhail Sumarokov-Elston graduate from Annenschule?
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Q: Context: German Type IXC submarines were slightly larger than the original Type IXBs. Link Information: none Answer: none

A:
How many years after the first completion of the original Type IXBs were the German Type IXC submarines created?
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