Complex sentence: One night the female black belt student entered the dojo in the middle of the black-belt circle, she was visibly upset and said she had been raped and that despite her fighting skills, she had been unable to defend herself against the attacker.
Split into simpler sentences: One night the female black belt student entered the dojo in the middle of the black-belt circle. She said she had been raped and that despite her fighting skills, she had been unable to defend herself against the attacker.