Capacity is related to Tank. Tank is related to Waste. you are likely to find Waste in/at/on Trash. 
Milk is related to Feed. Feed is a type of Insert. Sandwich is a type of Insert. Sandwich is related to Egg. 
Capacity <--RelatedTo--> Tank <--RelatedTo--> Waste --AtLocation--> Trash 
Milk <--RelatedTo--> Feed --IsA--> Insert <--IsA-- Sandwich <--RelatedTo--> Egg 