Bridge is a type of Connection. Auction is a type of Bridge. 
Significance is a synonym of Implication. Implication is a type of Involvement. Involvement is a synonym of Affair. Affair is related to Romantic. 
Connection <--IsA-- Bridge <--IsA-- Auction 
Significance <--Synonym--> Implication --IsA--> Involvement <--Synonym--> Affair <--RelatedTo--> Romantic 