diff --git a/light9/web/timeline-elements.html b/light9/web/timeline-elements.html
--- a/light9/web/timeline-elements.html
+++ b/light9/web/timeline-elements.html
@@ -322,7 +322,12 @@
 
 <script src="/lib/sylvester/sylvester.js"></script>
 <script src="/lib/d3/build/d3.min.js"></script>
-<script src="/lib/N3.js/browser/n3-browser.js"></script>
+
+<!-- version with https://github.com/RubenVerborgh/N3.js/pull/61 -->
+<script src="/lib/N3.js-1d2d975c10ad3252d38393c3ea97b36fd3ab986a/browser/n3-browser.js"></script>
+<!-- master version -->
+<xxscript src="/lib/N3.js/browser/n3-browser.js"></script>
+  
 <script src="/lib/knockout/dist/knockout.debug.js"></script>
 <script src="/lib/shortcut/index.js"></script>
 <script src="/lib/async/dist/async.js"></script>