Complex sentence: Further in the day, during a class changing period, in the presence of a teacher and 22 students, Owens fired one shot at classmate 6-year-old Kayla Rolland, which entered her right arm and traveled through her vital organs.
Split into simpler sentences: Further in the day, during a changing of classes, Owens fatally shot 6-year-old Kayla Rolland in the presence of a teacher and 22 students. The bullet entered her right arm and traveled through her vital organs.