Question: What is the date of death of Dhasanawalaya Sornsongkram's mother?
Sentence (from "Galyani Vadhana"): Galyani Vadhana, Princess of Naradhiwas (6 May 1923 – 2 January 2008) was a princess of Thailand and the elder sister of King Ananda Mahidol (Rama VIII) and King Bhumibol Adulyadej (Rama IX).
Relevant evidence: Yes