Conclusion is a type of Assumption. Conclusion is the opposite of Introduction. Introduction is a synonym of Preliminary. 
Oak is related to Tree. Tree is related to Like. Like is related to Danger. 
Assumption <--IsA-- Conclusion <--Antonym--> Introduction <--Synonym--> Preliminary 
Oak <--RelatedTo--> Tree <--RelatedTo--> Like <--RelatedTo--> Danger 