Opinion is related to Page. Page is the opposite of Spine. 
Sexual is related to Affair. Affair is related to Alliance. Alliance is a synonym of Connection. Involvement is a type of Connection. 
Opinion <--RelatedTo--> Page <--Antonym--> Spine 
Sexual <--RelatedTo--> Affair <--RelatedTo--> Alliance <--Synonym--> Connection <--IsA-- Involvement 