Crystal is a different concept from Glass. Window is made of Glass. you are likely to find Fan in/at/on Window. Fan is related to Blow. 
Oral is related to Taste. Taste is related to Action. Aggression is a type of Action. Aggression is related to Fight. 
Crystal <--DistinctFrom--> Glass <--MadeOf-- Window <--AtLocation-- Fan <--RelatedTo--> Blow 
Oral <--RelatedTo--> Taste <--RelatedTo--> Action <--IsA-- Aggression <--RelatedTo--> Fight 