Complex sentence: The SQM Case is closely related to the Penta Case, since defendants from both cases overlap and it is the same time of crime, so it's also called the Penta-SQM Case.
Split into simpler sentences: The SQM Case is closely related to the Penta Case, since defendants from both cases overlap and it is the same type of crime. So it's also called the Penta-SQM Case.