Complex sentence: Ertharin Cousin (born 1957) is the United States Ambassador to the United Nations Agencies for Food and Agriculture, serving in Rome, Italy, and chief of the United States Mission to the UN Agencies in Rome.
Split into simpler sentences: Ertharin Cousin (born 1957) is the United States Ambassador to the Food and Agriculture Organization of the United Nations, serving in Rome, Italy. In her position she is also chief of the United States Mission to the UN Agencies in Rome.