Departure is related to Exist. Breathe is a type of Exist. Breathe requires Alive. Envelope cannot be Alive. 
Pillow is related to Rest. Rest is related to Chill. 
Departure <--RelatedTo--> Exist <--IsA-- Breathe --HasPrerequisite--> Alive <--NotHasProperty-- Envelope 
Pillow <--RelatedTo--> Rest <--RelatedTo--> Chill 