Chicken is a type of Bird. Chicken is related to Little. Little is related to Hill. Hill is related to Pile. 
Christmas is related to Full. Full is related to Crowd. Crowd is related to Protest. 
Bird <--IsA-- Chicken <--RelatedTo--> Little <--RelatedTo--> Hill <--RelatedTo--> Pile 
Christmas <--RelatedTo--> Full <--RelatedTo--> Crowd <--RelatedTo--> Protest 