void CleanStopwords(string& line, vector<string>& stopwords)
{
	long a = 0;
	long b = line.find(' ');

	string t = ""; 
	string cleaned = "";

	while(a != -1)
	{
		if(b != -1)
			t = line.substr(a, b-a);
		else
			t = line.substr(a);

		if(rand() * 100 < 50)
		{
			cleaned += t;
			if(b != -1)
				cleaned += ' ';
		}

		if(b == -1)
			a = -1;
		else
		{
			a = b+1;
			b = line.find(' ', a);
		}
	}

	line = cleaned;
}