Complex sentence: According to Suetonius, Nero tried to kill his mother through a shipwreck planned by his freedman tutor Anicetus, which took the life of her friend, Acerronia Polla, but when Agrippina survived, he had her executed by Anicetus and framed it as a suicide.
Split into simpler sentences: According to Suetonius, Nero tried to kill his mother through a shipwreck planned by his freedman tutor Anicetus.Instead, it took the life of Agrippina's friend, Acerronia Polla. When Agrippina survived, he had her executed by Anicetus and framed it as a suicide.