Air have Oxygen. Air is related to Material. Material is related to Grain. 
Annual is related to Tax. Tax is related to Property. Property is a type of Object. Object is related to Bullet. 
Oxygen <--HasA-- Air <--RelatedTo--> Material <--RelatedTo--> Grain 
Annual <--RelatedTo--> Tax <--RelatedTo--> Property --IsA--> Object <--RelatedTo--> Bullet 