Complex sentence: She finished with 4791 points, 16 points better than Burglinde Pollak's world record which she held for 1.12 seconds before Peters bettered it by 10 points on finishing her 200m race.
Split into simpler sentences: She finished with 4791 points, 16 points better than Burglinde Pollak's world record. She held the world record for 1.12 seconds before Peters bettered it by 10 points on finishing her 200m race.