An answer is given. Generate a question for which the given answer is either a direct or partial answer.

[EX Q]: Answer: motown
[EX A]: what record company did stevie wonder sign with?

[EX Q]: Answer: arctic ocean
[EX A]: which ocean or country borders iceland?

[EX Q]: Answer: rhine
[EX A]:
what river was considered by napoleon as the natural border between france netherlands and the german territories?