import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String html = "Cleaned!<!-- \nsome comment --><title> my title</title> style='OUR_STYLE'<meta ...>";
		Pattern p = Pattern.compile("<!--.*?-->|<title>.*?</title>|\\s+style='[^']+'|"
	        + "<(meta|link|/?o:|/?style|/?div|/?std|/?head|/?html|/?body|/?span|!\\[)[^>]*>|"
	        + "(<[^>]+>)+&nbsp;(</\\w+>)+", Pattern.CASE_INSENSITIVE|Pattern.DOTALL);
		Matcher m = p.matcher(html);
		String result = m.replaceAll("");
		System.out.println(result);
	}
}

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