Book is related to Character. Character is related to Fiber. 
Event is related to Operation. Operation is related to Increase. Increase is related to Profit. Profit is related to Increased. 
Book <--RelatedTo--> Character <--RelatedTo--> Fiber 
Event <--RelatedTo--> Operation <--RelatedTo--> Increase <--RelatedTo--> Profit <--RelatedTo--> Increased 