 Complete the following phrase:  Johanna Katariina Matintalo born 11 December 1996 is a Finnish cross-country skier and former track and field athlete. She set Finnish age group records as a middle-distance runner and was national champion in the womens 800 metres in 2013, but injuries and stagnating results led her to concentrate on skiing. As a skier, she won silver in the womens skiathlon at the 2017 World U23 Championships and represented Finland in the 