Group is related to Fruit. Seed is a type of Fruit. Seed is related to Being. Being is related to Birth. 
Fare is a type of Passenger. Fare is related to Bus. 
Group <--RelatedTo--> Fruit <--IsA-- Seed <--RelatedTo--> Being <--RelatedTo--> Birth 
Passenger <--IsA-- Fare <--RelatedTo--> Bus 