Complex sentence: This is a new and much debated diagnosis or label, that has two criteria: firstly that the individual be'dangerous', i.e. that they are considered to be or represent a'Grave and Immediate Danger' to the general public.
Split into simpler sentences: This is a new and much debated diagnosis or label that has two criteria. The first criterion is that the individual be'dangerous', i.e. they are considered to be or represent a'Grave and Immediate Danger' to the general public.