Complex sentence: However, as it begins to distract him, he gives it to Simon amd Tom requesting them to take care of it but through a series of misunderstanding they use it as the test object for a fake guillotine only to end up beheading the practice baby.
Split into simpler sentences: However, as it begins to distract him, he gives it to Simon amd Tom and asks them to take care of it. Unfortunately, they use it as the test object for a fake guillotine and accidentally behead the practice baby.