public void TerminalInstantiatePrimeInstance()
        {
            // Arrange
            Terminal term = new Terminal();

            // Act
            term.AskFirstQuestion();
            string first_input = "prime";
            term.AcceptFirstAnswer(first_input);
            Integer actual_output = term.NumberFamilyFactory();

            // Assert
            Assert.IsInstanceOfType(actual_output, typeof(Prime));
        }