Regret is a type of Emotion. Doubt is a type of Emotion. Hesitate entails/necessarily involves Doubt. 
Tablespoon is related to Serving. Serving is related to Bar. 
Regret --IsA--> Emotion <--IsA-- Doubt <--Entails-- Hesitate 
Tablespoon <--RelatedTo--> Serving <--RelatedTo--> Bar 