Success is related to Profit. Profit is related to Company. Triumph is a type of Company. 
Difficult is related to Math. Math is related to Array. Array is a synonym of Range. Range is related to Top. 
Success <--RelatedTo--> Profit <--RelatedTo--> Company <--IsA-- Triumph 
Difficult <--RelatedTo--> Math <--RelatedTo--> Array <--Synonym--> Range <--RelatedTo--> Top 