Example is related to Number. Number is related to Series. Series is related to Rank. Rank is related to High. 
Opportunity is related to Regret. Regret is related to Disappointment. Frustration is a type of Disappointment. 
Example <--RelatedTo--> Number <--RelatedTo--> Series <--RelatedTo--> Rank <--RelatedTo--> High 
Opportunity <--RelatedTo--> Regret <--RelatedTo--> Disappointment <--IsA-- Frustration 