Complex sentence: On February 29,2000,6 year old Dedrick Owens found a gun took it to school and shot and killed 6 year old Kayla Rolland and is the youngest school shooting in USA history.
Split into simpler sentences: On February 29,2000,6 year old Dedrick Owens found a gun, took it to school, and shot and killed 6 year old Kayla Rolland. The murder is the youngest school shooting in USA history.