Question: What is the date of death of Burr H. Nicholls's wife?
Sentence (from "Burr H. Nicholls"): Burr H. Nicholls (December 9, 1848 – May 12, 1915) was an American painter who studied art with Carolus-Duran in Paris and first exhibited his work in London at Dudley Gallery.
Relevant evidence: No