Arena is related to Crowd. Crowd is related to Tight. Tight is a synonym of Fast. 
People is a type of Better. People can be used for Humanity. Humanity wants (to) Live. Live is related to Ocean. 
Arena <--RelatedTo--> Crowd <--RelatedTo--> Tight <--Synonym--> Fast 
Better <--IsA-- People --UsedFor--> Humanity --Desires--> Live <--RelatedTo--> Ocean 