Complex sentence: After winning three gold medals in the 1950 British Empire Games, she won her first Olympic title at the 1952 Games in Helsinki; she won the 80 m hurdles in world record time (10.9 s).
Split into simpler sentences: After winning three gold medals in the 1950 British Empire Games she won her first Olympic title at the 1952 Games in Helsinki. She earned her gold medal in the 80 m hurdles, blitzing the field in world record time (10.9 s).