Question: When is Malik-Shah I's father's birthday?
Sentence (from "Alp Arslan"): Alp Arslan (honorific in Turkish meaning "Heroic Lion"; in ; full name: "Diyā ad-Dunyā wa ad-Dīn Adud ad-Dawlah Abu Shujā’ Muhammad Ālp Ārslan ibn Dawūd" ; 20 January 1029 – 15 December 1072), real name Muhammad bin Dawud Chaghri, was the second Sultan of the Seljuk Empire and great-grandson of Seljuk, the eponymous founder of the dynasty.
Relevant evidence: Yes