Determine if the sentence is true based on the text below:
He had dark hair

Rudolf Khametovich Nureyev (Bashkir: , Tatar: , Russian: ; 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.
It's impossible to say