Legislator is a type of Politician. Politician is related to Major. Major is a type of Student. Student is a different concept from Job. 
Chapter is a type of Club. Club is a synonym of Set. 
Legislator --IsA--> Politician <--RelatedTo--> Major --IsA--> Student <--DistinctFrom--> Job 
Chapter --IsA--> Club <--Synonym--> Set 