public abstract class Person {
    protected String name;
    protected int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() { return name; }
    public int getAge()     { return age; }

    public abstract String getRole();
    public abstract String getExtraInfo();

    @Override
    public String toString() {
        return getRole() + " | Name: " + name + ", Age: " + age
               + ", " + getExtraInfo();
    }
}