Complex sentence: Several Papyeong Yoon women became queens during the early Joseon Dynasty, and the last ruling Empress, Empress Sunjeong of the Korean Empire, was from another Yoon clan, Haepyeong Yoon.
Split into simpler sentences: Several Papyeong Yoon women became queens during the early Joseon Dynasty. Last ruling Empress, Empress Sunjeong of the Korean Empire, was from another Yoon clan, Haepyeong Yoon.