anchor.diff:  
   				freya.artworks().add(artwork).execute();
   				freya.artworks().addArtistToArtwork(artwork.getId(),
  -						artist);
  +						artist).execute();
   				response.sendRedirect("list.jsp");
   				return;
   			}
  
positive.code: <%@page import="com.appspot.freya_app.freya.model.Dimension"%>
  <%@ page contentType="text/html;charset=UTF-8" language="java"%>
  <%@ page import="java.io.IOException"%>
  
negative.code: 				artwork = new Artwork();
  			}
  
  			String title, support, technique, date, summary, tags = null;
  			artistName = request.getParameter("artist");
  			title = request.getParameter("title");
  			support = request.getParameter("support");
  			technique = request.getParameter("technique");
  			date = request.getParameter("date");
  			summary = request.getParameter("summary");
  			tags = request.getParameter("tags");
  			
  			if(tags != null) {
  				String tagArray[] = tags.split(";");
  				ArrayList<String> strings = new ArrayList<String>();
  				for(String s : tagArray) {
  					strings.add(s);
  				}
  				artwork.setTags(strings);
  			}
  
  			if (artistName != null && title != null && support != null
  					&& technique != null && date != null
  