public void pastCrowl2(){
		DatastoreService datastore = DatastoreServiceFactory
				.getDatastoreService();
		Entity past_string = null;
		try {
			Key key = KeyFactory.createKey("past_string", "onlyOne");
			past_string = datastore.get(key);
		} catch (Throwable t) {
		}
		past_string.setProperty("text",new Text(new Past().getPastString()));
		try{
		//if(false)
			datastore.put(past_string);
		}catch(Throwable t){}
		Queue queue = QueueFactory.getDefaultQueue();
		queue.add(Builder.withUrl("/back").param("op","pastCrowl2").method(Method.POST).countdownMillis(60000*60));
		queue.add(Builder.withUrl("/ranking").param("c","this").method(Method.GET).countdownMillis(60000*50));
		queue.add(Builder.withUrl("/pair").param("c","this").method(Method.GET).countdownMillis(60000*40));
	}