Question: What is the date of death of Baha Al-Dawla's father?
Sentence (from "Baha al-Dawla"): Abu Nasr Firuz Kharshadh (died December 22, 1012), better known by his "laqab" of Baha al-Dawla  was the Buyid amir of Iraq (988–1012), along with Fars and Kerman (998–1012).
Relevant evidence: No