Complex sentence: In 2003, Calvo won "Taste Down Under", an Australian culinary competition and her winning dish was served at a dinner for the United Nations and its ambassadors, making her the youngest person to cook for the United Nations.
Split into simpler sentences: In 2003, Calvo won "Taste Down Under", an Australian culinary competition. Her winning dish was served at a dinner for the United Nations and its ambassadors, making her the youngest person to cook for the United Nations.