import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    String inputText = "I want to know relating to Cloud based ERP services.";
     	Set<String> words = new HashSet<String>();
        words.add("erp.*cloud");
        words.add("cloud.*erp");
 
        Pattern p = Pattern.compile(String.join("|", words), Pattern.CASE_INSENSITIVE);
 
        Matcher m = p.matcher(inputText);
        if (m.find()) 
        {
           //return m.group();
           System.out.println(m.group() + ": Yes we providing it.");
       }
	}
}

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