Should is related to Regret. Regret is a type of Emotion. Confusion is a type of Emotion. 
Contain is a synonym of Control. Regulation is a type of Control. Regulation is etymologically related to Regulate. Regulate is a synonym of Settle. 
Should <--RelatedTo--> Regret --IsA--> Emotion <--IsA-- Confusion 
Contain <--Synonym--> Control <--IsA-- Regulation --EtymologicallyRelatedTo--> Regulate <--Synonym--> Settle 