Small is related to Jacket. you are likely to find Jacket in/at/on Person. Person wants (to) Dialogue. Conversation is a type of Dialogue. 
Assume is a type of Change. Change is related to Difference. Difference requires Separation. 
Small <--RelatedTo--> Jacket --AtLocation--> Person --Desires--> Dialogue <--IsA-- Conversation 
Assume --IsA--> Change <--RelatedTo--> Difference --HasPrerequisite--> Separation 