Complex sentence: Discus thrower Rebecca Chin was originally awarded the silver medal in the women's F37--38, but her classification was challenged and Chin was deemed ineligible for the event, stripped of her medal, and her results were erased.
Split into simpler sentences: Discus thrower Rebecca Chin was originally awarded the silver medal in the women's F37--38 event. Following a challenge to her classification, Chin was deemed ineligible for the event, stripped of her medal, and her results were erased.