Critic is a type of Professional. Professional is related to Protest. Protest is related to Fight. Battle is a type of Fight. 
Register is a type of Regulator. Register is a type of Mail. Mail is related to Box. Box is part of Coach. 
Critic --IsA--> Professional <--RelatedTo--> Protest <--RelatedTo--> Fight <--IsA-- Battle 
Regulator <--IsA-- Register --IsA--> Mail <--RelatedTo--> Box --PartOf--> Coach 