Race is related to Start. Start is a type of Line. Line is related to Point. Point is a type of Meaning. 
you are likely to find Sock in/at/on Closet. Sock is related to Ankle. 
Race <--RelatedTo--> Start --IsA--> Line <--RelatedTo--> Point --IsA--> Meaning 
Closet <--AtLocation-- Sock <--RelatedTo--> Ankle 