Complex sentence: In the fourth episode of the 2014 Japanese puppetry "Sherlock Holmes", Mary Sutherland is a female pupil of Beeton School and loves her senior Hosmer Angel though he suddenly diappears in a cave at the back of the school.
Split into simpler sentences: In the fourth episode of the 2014 Japanese puppetry series "Sherlock Holmes", Mary Sutherland is a female pupil of Beeton School. She is in love with the senior Hosmer Angel who suddenly disappears in a cave at the back of the school.