Baseball is related to Bat. Bat is related to Equipment. Equipment is related to Slide. Slide is related to Smooth. 
Farm is related to Field. Field is related to Fence. 
Baseball <--RelatedTo--> Bat <--RelatedTo--> Equipment <--RelatedTo--> Slide <--RelatedTo--> Smooth 
Farm <--RelatedTo--> Field <--RelatedTo--> Fence 