Land is related to Sand. Sand is related to Rough. Rough is related to Paper. Paper is related to Case. 
Fruit can be used for Eating. Fruit is related to Seed. 
Land <--RelatedTo--> Sand <--RelatedTo--> Rough <--RelatedTo--> Paper <--RelatedTo--> Case 
Eating <--UsedFor-- Fruit <--RelatedTo--> Seed 