Complex sentence: Doctor Jacques Moreillon (born 1939) served as the Secretary General of the World Organization of the Scout Movement from November 1 1988 to March 31,2004.
Split into simpler sentences: Doctor Jacques Moreillon (born 1939) served as the Secretary General of the World Organization of the Scout Movement in the 1990s. He served as the Secretary General of WOSM from November 1 1988 through March 31,2004.