Expose is a synonym of Uncover. Uncover is a synonym of Bare. 
Course is related to Segment. Segment is related to Act. Race is a type of Act. Race is related to Athletic. 
Expose <--Synonym--> Uncover <--Synonym--> Bare 
Course <--RelatedTo--> Segment <--RelatedTo--> Act <--IsA-- Race <--RelatedTo--> Athletic 