In what year was the conductor who has led the Sinfonia Varsovia since 2003 born?
Sinfonia Varsovia:  Since 2003 the orchestra has been led by Krzysztof Penderecki as its artistic director. Krzysztof Penderecki: Krzysztof Eugeniusz Penderecki ( ; ] ; born 23 November 1933) is a Polish composer and conductor. "
1933