Exact is similar to Perfect. Perfect is a different concept from Bad. Bad is the opposite of Quality. Power is a type of Quality. 
Decide is related to Thought. Thought is related to Opinion. Politics is a type of Opinion. 
Exact <--SimilarTo--> Perfect <--DistinctFrom--> Bad <--Antonym--> Quality <--IsA-- Power 
Decide <--RelatedTo--> Thought <--RelatedTo--> Opinion <--IsA-- Politics 