Question: What is the date of death of Viliami Tungī Mailefihi's wife?
Sentence (from "Viliami Tungī Mailefihi"): Viliami Tungī Mailefihi (1 November 1888 – 20 July 1941) was a Tongan high chieftain and Prince Consort of Queen Sālote Tupou III.
Relevant evidence: Yes