Hour is related to Long. Long is related to River. you are likely to find Bridge in/at/on River. you are likely to find Homeless in/at/on Bridge. 
Gold is related to Olympic. Olympic is related to Swim. 
Hour <--RelatedTo--> Long <--RelatedTo--> River <--AtLocation-- Bridge <--AtLocation-- Homeless 
Gold <--RelatedTo--> Olympic <--RelatedTo--> Swim 