public ArrayList<Result> getResultsFromEvent(String identifier)
        {
        	//We iterate through the whole list, checking for the Event with that identifier
        	//If we don't find any events with that identifier, we throw an exception
        	for(Event e: events){
        		if(e.getIdentifier().equals(identifier))
         		   return e.getResults();
        		}
	        //If we arrive here, there were no events with that identifier, so we throw an exception
        	throw new IllegalArgumentException("There's no Event with identifier '"+identifier+"'.");
        }