using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

            var searchText=" the ";

            var input="I have asked the question in StackOverflow. Therefore i can expect answer here.";

            var arr=input.Split(new char[]{' ','.'});

            var count=Array.FindAll(arr, s => s.Equals(searchText.Trim())).Length;

            Console.WriteLine(count);

    }

}