Complex sentence: She was engaged to Rikard Nordraak for a short time, and from 1892 to 1894 she had an affair with Bjørnstjerne Bjørnson.
Split into simpler sentences: She was engaged to Rikard Nordraak for a short time. From 1892 to 1894 she had an affair with Bjørnstjerne Bjørnson.