Question: What is the date of death of George Tupou V's father?
Sentence (from "George Tupou V"): George Tupou V (Tongan: Siaosi Tupou, full name: Siaosi Tāufaʻāhau Manumataongo Tukuʻaho Tupou; 4 May 194818 March 2012) was the King of Tonga from the death of his father Tāufaʻāhau Tupou IV in 2006 until his own death six years later.
Relevant evidence: Yes