Question: What president was assassinated in an explosion on August 1981, and was succeeded by a man elected as the new Supreme Leader by the Assembly of Experts on 4 June 1989 at the age of 49?
Sentence (from "Ali Khamenei"): Khamenei succeeded the first Supreme Leader, Ruhollah Khomeini, after Khomeini's death, being elected as the new Supreme Leader by the Assembly of Experts on 4 June 1989 at the age of 49.
Relevant evidence: Yes