Calculate is a type of Reason. Reason is a synonym of Argue. Argue is a synonym of Debate. Debate is related to Discourse. 
Defensive is related to Guard. Guard is related to Advance. Advance is related to Pay. 
Calculate --IsA--> Reason <--Synonym--> Argue <--Synonym--> Debate <--RelatedTo--> Discourse 
Defensive <--RelatedTo--> Guard <--RelatedTo--> Advance <--RelatedTo--> Pay 