Gift is related to Fortune. Fortune is related to Win. Sweep is a type of Win. 
Rule is a synonym of Convention. Conventional is derived from Convention. Conventional is similar to Formal. 
Gift <--RelatedTo--> Fortune <--RelatedTo--> Win <--IsA-- Sweep 
Rule <--Synonym--> Convention <--DerivedFrom-- Conventional <--SimilarTo--> Formal 