Mountain is related to Formation. Formation is related to Hill. Hill is related to Cliff. 
Back is related to Turn. Turn is related to Reading. Reading is related to Enjoy. Enjoy is related to Happy. 
Mountain <--RelatedTo--> Formation <--RelatedTo--> Hill <--RelatedTo--> Cliff 
Back <--RelatedTo--> Turn <--RelatedTo--> Reading <--RelatedTo--> Enjoy <--RelatedTo--> Happy 