Robot can be used for Help. Benefit is a type of Help. Benefit is related to Exercise. Exercise is a synonym of Drill. 
Characteristic is related to Name. Name is related to Liberty. 
Robot --UsedFor--> Help <--IsA-- Benefit <--RelatedTo--> Exercise <--Synonym--> Drill 
Characteristic <--RelatedTo--> Name <--RelatedTo--> Liberty 