Musical is related to Rest. you would Sleep because Rest. Sleep is related to Sheep. Sheep is related to Buy. 
Passage can be used for Read. Curiosity would make you want to Read. 
Musical <--RelatedTo--> Rest <--MotivatedByGoal-- Sleep <--RelatedTo--> Sheep <--RelatedTo--> Buy 
Passage --UsedFor--> Read <--CausesDesire-- Curiosity 