Question: What is the date of death of Manon Gropius's father?
Sentence (from "Manon Gropius"): Alma Manon Gropius (October 5, 1916 – April 22, 1935) was the daughter of the architect Walter Gropius and the composer and diarist Alma Mahler and the stepdaughter of the novelist and poet Franz Werfel.
Relevant evidence: Yes