Noon is related to Morning. Morning is related to Meal. Meal is related to Course. Course is related to Route. 
Racism is a type of Discrimination. you are likely to find Racism in/at/on South. South is a different concept from North. 
Noon <--RelatedTo--> Morning <--RelatedTo--> Meal <--RelatedTo--> Course <--RelatedTo--> Route 
Discrimination <--IsA-- Racism --AtLocation--> South <--DistinctFrom--> North 