Detailed Instructions: Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
Problem:German submarine U-331 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 26 January 1940 at the Nordseewerke yard at Emden, launched on 20 December 1940, and commissioned on 31 March 1941 under the command of Oberleutnant zur See Hans-Diedrich Freiherr von Tiesenhausen.
Solution:
What company made German submarine U-331?