Question: Who directed he Paris Opera Ballet from 1983 to 1989 and its chief choreographer until October 1992, and he gave the tittle of étoile to a member of the Paris Opera Ballet from 1978?
Related documents: [0]  [DOC] Isabelle Guérin (born 1961) is a French ballet dancer. She was a member of the Paris Opera Ballet from 1978. In 1985, she received the title of étoile from Rudolf Nureyev. John Rockwell has described Guérin and Laurent Hilaire as "two of the Opera Ballet's greatest stars". She danced classical and modern repertoires until her retirement in 2001. [END] 
[1]  [DOC] Rudolf Khametovich Nureyev (Bashkir: Рудольф Хәмит улы Нуриев , Tatar: Рудольф Хәмит улы Нуриев , Russian: Рудо́льф Хаме́тович Нуре́ев ; 17 March 1938 – 6 January 1993) was a Soviet ballet dancer and choreographer. He was director of the Paris Opera Ballet from 1983 to 1989 and its chief choreographer until October 1992. [END] 
Answer: 
Rudolf Khametovich Nureyev
Rudolf Khametovich Nureyev