Effective is related to Useful. Useful is related to Hand. Hand is related to Shoulder. Shoulder is related to Shrug. 
you are likely to find Sock in/at/on Closet. 
Effective <--RelatedTo--> Useful <--RelatedTo--> Hand <--RelatedTo--> Shoulder <--RelatedTo--> Shrug 
Sock --AtLocation--> Closet 