using System;

var nokiaPhone = new Phone("Nokia 6610");
var kim = new Employee("Victorya", "Kim", new("iPhone 5"));

Console.WriteLine(nokiaPhone.Model);
Console.WriteLine(kim.PersonalPhone.Model);


class Phone {
    public string Model { get; set; }

    public Phone(string model) => Model = model;
}

class Employee {
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public Phone PersonalPhone { get; set; }

    public Employee(string firstName, string lastName, Phone personalPhone) =>
        (FirstName, LastName, PersonalPhone) = (firstName, lastName,
                          personalPhone);
}