Question: What is the date of death of Hso Khan Pha's mother?
Sentence (from "Sao Nang Hearn Kham"): Sao Nang Hearn Kham, Daw Hearn Kham (26 May 1916 – 17 January 2003) was the Mahadevi of Yawnghwe one of the most important Shan States.
Relevant evidence: Yes