Question: What is the date of death of the composer of song Yassassin?
Sentence (from "Yassassin"): The title of the song is derived from the Turkish verb used to wish someone a long life, spelled "yaşasın" , from the verbal root "yaşa-" 'live' with the third-person imperative ending; therefore "yaşasın" literally means 'may he/she live'.
Relevant evidence: No