Bulb is related to Smell. Smell is related to Scent. Scent is related to Nice. 
School is related to Bag. Bag is related to Case. Case is a synonym of Event. Event is related to Reaction. 
Bulb <--RelatedTo--> Smell <--RelatedTo--> Scent <--RelatedTo--> Nice 
School <--RelatedTo--> Bag <--RelatedTo--> Case <--Synonym--> Event <--RelatedTo--> Reaction 