Case is a type of Fact. Case is related to Situation. Violation is a type of Situation. Violation is a synonym of Rape. 
Van is related to Square. Square is a synonym of Feather. 
Fact <--IsA-- Case <--RelatedTo--> Situation <--IsA-- Violation <--Synonym--> Rape 
Van <--RelatedTo--> Square <--Synonym--> Feather 