Airport is related to Tower. Tower is related to Trade. Trade is related to Action. Aggression is a type of Action. 
High is related to Blessing. Blessing is related to Gift. Gift is related to Exchange. Exchange is related to Mutual. 
Airport <--RelatedTo--> Tower <--RelatedTo--> Trade <--RelatedTo--> Action <--IsA-- Aggression 
High <--RelatedTo--> Blessing <--RelatedTo--> Gift <--RelatedTo--> Exchange <--RelatedTo--> Mutual 