string Speech = e.Result.Text;
if (Speech == "I WANT TO SEARCH SOMETHING")
  {
    QEvent = Speech;
    wiki.SpeakAsync("what do you want to search");
    Speech = string.Empty;
  }
 else if (Speech != string.Empty && QEvent == "I WANT TO SEARCH SOMETHING")
   {
     Process.Start("http://google.com/search?q=" + Speech);
     QEvent = string.Empty;

     Num = rnd.Next(1, 4);
     if (Num == 1) { wiki.SpeakAsync("Alright, I am searching " + Speech + " in google"); }
     else if (Num == 2) { wiki.SpeakAsync("ok sir, I am searching " + Speech); }
     else if (Num == 3) { wiki.SpeakAsync("Alright, I am searching "); }
     Speech = string.Empty;

   }