 Complete the following phrase:  Liukkonens biggest career moments were Pertti Karppinens Olympic gold medal in rowing at the Montreal 1976, Moscow 1980 and in Los Angeles 1984 Olympics. In Los Angeles he was also the commentator for Jouko Salomäkis gold medal victory in Greco-Roman wrestling. For Winter sports Liukkonen commentated Matti Nykänens first World Champion victory in large hill in 