Diet is related to Eating. Eating is related to Cat. Persian is a type of Cat. 
Lion can be used for Cartoon. you are likely to find Monkey in/at/on Cartoon. you are likely to find Monkey in/at/on Joke. 
Diet <--RelatedTo--> Eating <--RelatedTo--> Cat <--IsA-- Persian 
Lion --UsedFor--> Cartoon <--AtLocation-- Monkey --AtLocation--> Joke 