Original sentence: A number of high-profile Eurovision artists returned to help introduce and present the show, these were: Carola Häggkvist, Massiel, Dana International, Birthe Wilke, Anne-Marie David, Sandra Kim, Elisabeth Andreassen, Hanne Krogh, Olsen Brothers, Emilija Kokić, Marie Myriam, Sertab Erener, Cheryl Baker and Lys Assia
Edited sentence: A number of high-profile Eurovision artists returned to help introduce and present the show, these were: Carola Häggkvist, Massiel, Dana International, Birthe Wilke, Anne-Marie David, Sandra Kim, Elisabeth Andreassen, Hanne Krogh, Olsen Brothers, Emilija Kokić, Marie Myriam, Sertab Erener, Nicole & Hugo, Cheryl Baker and Lys Assia