Enter is related to Line. Line is a type of Cover. Cover is related to Shoe. 
Behavior is related to Kind. Kind is related to Nature. Nature is related to Conservation. Conservation is a type of Principle. 
Enter <--RelatedTo--> Line --IsA--> Cover <--RelatedTo--> Shoe 
Behavior <--RelatedTo--> Kind <--RelatedTo--> Nature <--RelatedTo--> Conservation --IsA--> Principle 