Complex sentence: As a result of the fire, building regulations were quickly revised to prevent this sort of disaster from occurring again-indeed, since the revisions, there has not been a single year in which more than ten people have died from fires.
Split into simpler sentences: As a result of the fire, building regulations were quickly revised to prevent this sort of disaster from occurring again. Since the revisions, there has not been a single year in which more than ten people have died from fires.