--- a/rdf-primer/index.html	Tue Aug 13 19:19:50 2013 +0100
+++ b/rdf-primer/index.html	Tue Aug 13 19:55:40 2013 +0100
@@ -217,9 +217,11 @@
     statements of the form:</p> 
 
     <pre>
+      &lt;Bob&gt; &lt;is a&gt; &lt;person&gt;.
+      &lt;Alice&gt; &lt;is a&gt; &lt;person&gt;.
       &lt;Bob&gt; &lt;is a friend of&gt; &lt;Alice&gt;.
       &lt;Bob&gt; &lt;is born on&gt; &lt;the 4th of July 1990&gt;. 
-      &lt;Bob&gt; &lt;likes&gt; &lt;the Mona Lisa&gt;.
+      &lt;Bob&gt; &lt;is interested in&gt; &lt;the Mona Lisa&gt;.
       &lt;Leonardo da Vinci&gt; &lt;is the creator of&gt; &lt;the Mona Lisa&gt;.
       &lt;This video document&gt; &lt;is about&gt; &lt;the Mona Lisa&gt;
     </pre>
@@ -267,6 +269,14 @@
       <p>The IRI for a Web page about this painting in Wikidata is:</p>
 
       <pre>http://www.wikidata.org/wiki/Q12418</pre>
+
+      <p>The IRI for Leonardo da Vinci in <a href="http://viaf.org">VIAF</a> is:</p>
+
+      <pre>http://viaf.org/viaf/24604287/</pre>
+
+      <p>The IRI for an <a href="http://www.ina.fr">INA</a> video about the Mona Lisa in <a href="http://www.europeana.eu">Europeana</a> is:</p>
+
+      <pre>http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619</pre>
    
     </section>
 
@@ -303,9 +313,11 @@
       and identified by <code>http://example.com/bob</code>:</p>
 
       <pre>
+        &lt;Bob&gt; &lt;is a&gt; &lt;person&gt;.
+        &lt;Alice&gt; &lt;is a&gt; &lt;person&gt;.
         &lt;Bob&gt; &lt;is a friend of&gt; &lt;Alice&gt;.
         &lt;Bob&gt; &lt;is born on&gt; &lt;the 4th of July 1990&gt;.
-        &lt;Bob&gt; &lt;likes&gt; &lt;the Mona Lisa&gt;.
+        &lt;Bob&gt; &lt;is interested in&gt; &lt;the Mona Lisa&gt;.
       </pre>
 
       <p>A second graph could be provided by <a href="http://www.wikidata.org/">Wikidata</a>