Question: What is the date of death of Irving Thalberg's wife?
Sentence (from "Irving Thalberg"): Among them were Lon Chaney, Ramon Novarro, John Gilbert, Joan Crawford, Clark Gable, Jean Harlow, Wallace Beery, Luise Rainer, Greta Garbo, Lionel Barrymore, and Norma Shearer, who became his wife.
Relevant evidence: Yes