"1999-03-20Z"^^ . "Mattson, Sivert"@en . "1999Z"^^ . "1907-09-09Z"^^ . "1907Z"^^ . . "Swedish cross-country skier" . "Sivert Mattsson (September 9, 1907, Edefors, Norrbotten \u2013 March 20, 1999) was a Swedish cross country skier who competed in the 1932 Winter Olympics.In 1932 he finished eleventh in the shorter cross-country skiing event. He also participated in the 50 kilometre competition but did not finish."@en .