@startuml
abstract class Person {
  +name
}

abstract class Employee extends Person {
  +ssn
}

class Tap extends Employee {
}

enum VipRole {
  DEAN
  RESEARCHER
  RESEARCH_ASSISTANT
}

class Vip extends Employee {
  +VipRole role
}

class Student extends Person {
}

abstract class Org {
  +name
}

class Institute extends Org {
}

class Faculty extends Org, Institute {
  +address
}

VipRole - Vip
@enduml