Complex sentence: However on 8 February she took gold at the World allround championships in Hamar after setting new Czech national record at the 500 m track 40.28 seconds, and winning the 3000 m and 5000 m tracks.
Split into simpler sentences: However on 8 February she took gold at the World allround championships in Hamar. She improved here the Czech national record at the 500 m track, which she set for 40.28 seconds, and won the 3000 m and 5000 m tracks.