Question: What is the cause of death of Ahmad Tajuddin's father?
Sentence (from "Abdul Muntaqim"): Pengiran Muda Abdul Muntaqim ibni Al- Muhtadee Billah( born 17 March 2007) is the oldest child and first son of Al- Muhtadee Billah, heir to the Sultan of Brunei, and his wife, Sarah, Crown Princess of Brunei.
Relevant evidence: No