context: The name of the country came from the family of rulers, namely the family of its founder, Chief Ibn Saud of Riyadh. He, after leaving the Turkish Muslim army that ruled Arabia for centuries, won the war between the Arabian tribes and invaded and occupied the Najd and Hejaz territories and in 1932 proclaimed the Saudi Arabian Empire
question: Who was the first king of Saudi Arabia?
answers.text: Chief Ibn Saud