Original: Javier Pérez de Cuéllar y de la Guerra ( born January 19 , 1920 , in Lima ) is a Peruvian diplomat who served as the fifth Secretary-General of the United Nations from January 1 1982 to December 31 1991 .
Simplified: Javier Pérez de Cuéllar Guerra ( born January 19 , 1920 in Lima ) is a Peruvian diplomat who was the fifth Secretary-General of the United Nations from January 1 1982 to December 31 1991 .