Butter is related to Like. Like is related to Army. Army is related to Armed. Armed is related to War. 
Report is a type of Document. Report is related to Condition. Condition is related to Perfect. Perfect is the opposite of Mistake. 
Butter <--RelatedTo--> Like <--RelatedTo--> Army <--RelatedTo--> Armed <--RelatedTo--> War 
Document <--IsA-- Report <--RelatedTo--> Condition <--RelatedTo--> Perfect <--Antonym--> Mistake 