Disc is related to Medal. Medal is related to Olympic. Olympic is related to Gold. Gold is related to Buddy. 
Competition is related to Reward. Reward is related to Thanks. 
Disc <--RelatedTo--> Medal <--RelatedTo--> Olympic <--RelatedTo--> Gold <--RelatedTo--> Buddy 
Competition <--RelatedTo--> Reward <--RelatedTo--> Thanks 