Coal is related to Acid. Acid is a synonym of Dot. 
Purpose is related to Like. Like is related to Institution. Institution is a type of Establishment. Establishment is related to Constitution. 
Coal <--RelatedTo--> Acid <--Synonym--> Dot 
Purpose <--RelatedTo--> Like <--RelatedTo--> Institution --IsA--> Establishment <--RelatedTo--> Constitution 