Dancing can cause/lead to Expression. Expression is related to Shock. Shock is related to Surprised. Person wants (to) Surprised. 
Ratio is related to Scale. Scale is related to Used. 
Dancing --Causes--> Expression <--RelatedTo--> Shock <--RelatedTo--> Surprised <--Desires-- Person 
Ratio <--RelatedTo--> Scale <--RelatedTo--> Used 