Idea is part of Philosophy. Idea is related to Brilliant. Brilliant is the opposite of Average. 
Important is related to Necessity. Necessity is related to Manner. Manner is related to Thank. 
Philosophy <--PartOf-- Idea <--RelatedTo--> Brilliant <--Antonym--> Average 
Important <--RelatedTo--> Necessity <--RelatedTo--> Manner <--RelatedTo--> Thank 