Nail is related to Habit. Habit is related to Drinking. Pool can be used for Drinking. Pool can be used for Relax. 
Performance is a type of Action. Action is related to Search. 
Nail <--RelatedTo--> Habit <--RelatedTo--> Drinking <--UsedFor-- Pool --UsedFor--> Relax 
Performance --IsA--> Action <--RelatedTo--> Search 