Count is related to Rank. Rank is related to Race. 
Horse is related to Fast. Fast is related to Busy. Busy is related to Main. Main is related to Part. 
Count <--RelatedTo--> Rank <--RelatedTo--> Race 
Horse <--RelatedTo--> Fast <--RelatedTo--> Busy <--RelatedTo--> Main <--RelatedTo--> Part 