Complex sentence: She competed in the 100m breastroke SB12 and took second place with a time of 1:16.38 missing out on first place by a very narrow 0:00.21.
Split into simpler sentences: She competed in the 100m breastroke SB12. She took the second place with a time of 1:16.38 missing out on first place by a very narrow 0:00.21.