--- a/schema.org/ext/ActionBase.html	Wed Jul 24 16:47:49 2013 +0200
+++ b/schema.org/ext/ActionBase.html	Wed Jul 24 18:12:49 2013 +0200
@@ -12,7 +12,7 @@
 
 <h2 property="rdfs:label" class="page-title"><span class="schema_type">Action</span></h2>
 
-<p class="narrow"><strong>Subclass of:</strong> <a property="rdfs:subClassOf" href="http://schema.org/Intangible">Intangible</a></p>
+<p class="narrow"><strong>Subclass of:</strong> <a property="rdfs:subClassOf" href="http://schema.org/Thing">Thing</a></p>
 
 <p class="description" property="rdfs:comment">An action performed by a direct agent and indirect participants upon a direct object, starting at an origin towards a destination. Happens at a location, with the help of an inanimate instrument. The execution of the action may produce a result. Specific action sub-type documentation specifies the exact expectation of each argument/role/slot.</p>
 
@@ -66,6 +66,15 @@
 <td property="rdfs:comment">The result produced in the action. E.g. John wrote *a book*.</td>
 </tr>
 
+<tr typeof="rdf:Property" resource="http://schema.org/instrument">
+<th property="rdfs:label">instrument</th>
+<td>
+<link property="http://schema.org/domain" href="http://schema.org/Action"></link>
+<a property="http://schema.org/range" href="http://schema.org/Thing">Thing</a>
+</td>
+<td property="rdfs:comment">The object that helped the agent perform the action. E.g. John wrote a book with *a pen*.</td>
+</tr>
+
 
 <tr typeof="rdf:Property" resource="http://schema.org/startTime">
 <th property="rdfs:label">startTime</th>