--- a/model/prov-dm.html	Thu Jun 28 15:56:53 2012 +0100
+++ b/model/prov-dm.html	Thu Jun 28 16:15:47 2012 +0100
@@ -1250,8 +1250,8 @@
 
 <li>There were some agents.
 <pre>
-agent(ex:Paolo, [ prov:type="Person" ])
-agent(ex:Simon, [ prov:type="Person" ])
+agent(ex:Paolo, [ prov:type='prov:Person' ])
+agent(ex:Simon, [ prov:type='prov:Person' ])
 </pre>
 </li>
 
@@ -2309,8 +2309,8 @@
 <a class="section-ref" href="#section-example-one"><span>TBD</span></a>,
 we can ascribe <span class="name">tr:WD-prov-dm-20111215</span> to some agents without an explicit activity. The reserved attribute <span class="name">role</span> (see <a  class="section-ref" href="#term-attribute-role"><span>TBD</span></a>) allows for role of the agent in the attribution to be specified.
 <pre class="codeexample">
-agent(ex:Paolo, [ prov:type="Person" ])
-agent(ex:Simon, [ prov:type="Person" ])
+agent(ex:Paolo, [ prov:type='prov:Person' ])
+agent(ex:Simon, [ prov:type='prov:Person' ])
 entity(tr:WD-prov-dm-20111215, [ prov:type='rec54:WD' ])
 wasAttributedTo(tr:WD-prov-dm-20111215, ex:Paolo, [ prov:type="editorship" ])
 wasAttributedTo(tr:WD-prov-dm-20111215, ex:Simon, [ prov:type="authorship" ])