Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Marten von Barnekow (18 March 1900 in Kronburg -- 29 January 1967 near Hof) was a German equestrian and Olympic champion.
Answer : 29 January 1967
What was the death date of Marten von Barnekow?