Question: When did Carl Koch (Director)'s wife die?
Sentence (from "Carl Koch (director)"): Carl Koch or Karl Koch (30 July 1892 in Nümbrecht, Germany – 1 December 1963 in Barnet, England) was a German film director and writer with many secondary credits including collaborations with his wife Lotte Reiniger, the animator of "The Adventures of Prince Achmed" (1926).
Relevant evidence: Yes