Complex sentence: Fumiko Kaneko, was a Japanese anarchist who lived in Japanese occupied Korea, where she witnessed the mistreatment of the native Koreans by her relatives and other Japanese occupiers while in Korea.
Split into simpler sentences: Fumiko Kaneko, was a Japanese anarchist who lived in Japanese occupied Korea. She witnessed the mistreatment of the native Koreans by her relatives and other Japanese occupiers while in Korea.