Complex sentence: Gembō made improper advances to the wife of Fujiwara no Hirotsugu, Hirotsugu petitioned for the removal of the priest, but Kibi no Makibi and Genbō conspired successfully to discredit him.
Split into simpler sentences: Gembō made improper advances to the wife of Fujiwara no Hirotsugu. When Hirotsugu petitioned for the removal of the priest, Kibi no Makibi and Genbō used the complaint as a pretext to discredit him.