Class is related to Servant. Servant is related to King. King is a different concept from Bishop. 
Mayor can be used for Govern. Mayor is related to Person. Person is related to Correspondent. 
Class <--RelatedTo--> Servant <--RelatedTo--> King <--DistinctFrom--> Bishop 
Govern <--UsedFor-- Mayor <--RelatedTo--> Person <--RelatedTo--> Correspondent 