using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        string text1 = "WORKS";

        string text2 = "WORKING?";

        Console.WriteLine(text1.ToLower() == "works");

        Console.WriteLine(text2.ToLower() == "working?");

        Console.WriteLine(text1.ToLowerInvariant() == "works");

        Console.WriteLine(text2.ToLowerInvariant() == "working?");

        Console.WriteLine(text1.ToLower(new CultureInfo("tr-TR")) == "works");

        Console.WriteLine(text2.ToLower(new CultureInfo("tr-TR")) == "working?");

    }

}