Thing is related to Stuff. Stuff is related to Production. Production is related to Waste. 
Apple can be used for Pie. Apple is related to Son. Son is related to Mother. Mother is related to Colony. 
Thing <--RelatedTo--> Stuff <--RelatedTo--> Production <--RelatedTo--> Waste 
Pie <--UsedFor-- Apple <--RelatedTo--> Son <--RelatedTo--> Mother <--RelatedTo--> Colony 