Complex sentence: The medical examiner ruled his death a homicide, which is the killing of a person by another person, though it doesn't necessarily imply murder or even wrongdoing, as for example in a negligent homicide or justifiable homicide.
Split into simpler sentences: The medical examiner ruled his death a homicide, which is the killing of a person by another person. Homicide doesn't necessarily imply murder or even wrongdoing, as for example in a negligent homicide or justifiable homicide.