Complex sentence: In addition, he won the 50 km cross country event both at the 1931 FIS Nordic World Ski Championships and the 1931 Holmenkollen ski festival and a silver in the Nordic combined at the 1929 FIS Nordic World Ski Championships.
Split into simpler sentences: In addition, he won the 50 km cross country event at both the 1931 FIS Nordic World Ski Championships and the 1931 Holmenkollen ski festival. He also won silver in the Nordic combined at the 1929 FIS Nordic World Ski Championships.