Lap is related to Swim. Swim is related to Dancing. Dancing can cause/lead to Happiness. 
Booth is related to Structure. Tooth is a type of Structure. Tooth is a type of Projection. 
Lap <--RelatedTo--> Swim <--RelatedTo--> Dancing --Causes--> Happiness 
Booth <--RelatedTo--> Structure <--IsA-- Tooth --IsA--> Projection 