--- a/schema.org/ext/tvradio.html	Wed Dec 12 13:55:08 2012 +0000
+++ b/schema.org/ext/tvradio.html	Wed Dec 12 14:16:46 2012 +0000
@@ -25,24 +25,28 @@
       <span class="h" property="rdfs:label">Episode</span>
       <span property="rdfs:comment">A TV or radio episode which can be part of a series or season.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/CreativeWork">CreativeWork</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Episode">po:Episode</a></span>
     </div>
 
     <div typeof="rdfs:Class" resource="http://schema.org/Season">
       <span class="h" property="rdfs:label">Season</span>
       <span property="rdfs:comment">A TV or radio season.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/CreativeWork">CreativeWork</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Series">po:Series</a></span>
     </div>
 
     <div typeof="rdfs:Class" resource="http://schema.org/Series">
       <span class="h" property="rdfs:label">Series</span>
       <span property="rdfs:comment">A TV or radio series.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/CreativeWork">CreativeWork</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Brand">po:Brand</a></span>
     </div>
 
     <div typeof="rdfs:Class" resource="http://schema.org/Clip">
       <span class="h" property="rdfs:label">Clip</span>
       <span property="rdfs:comment">A short TV or radio program or a segment/part of a program.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/CreativeWork">CreativeWork</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Clip">po:Clip</a></span>
     </div>
 
     <!-- Sub-types for radio and TV programmes -->
@@ -126,7 +130,7 @@
       <span>Range: <a property="http://schema.org/range" href="http://schema.org/Date">Date</a></span>
     </div>
 
-    <div typeof="rdf:Property" resource="http://scheam.org/partOfSeason">
+    <div typeof="rdf:Property" resource="http://schema.org/partOfSeason">
       <span class="h" property="rdfs:label">part of season</span>
       <span property="rdfs:comment">The season to which this episode belongs.</span>
       <span>Domain: <a property="http://schema.org/domain" href="http://schema.org/Clip">Clip</a></span>
@@ -181,6 +185,7 @@
       <span class="h" property="rdfs:label">Broadcast service</span>
       <span property="rdfs:comment">A delivery service through which content is provided via broadcast over the air or online.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/Thing">Thing</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Service">po:Service</a></span>
     </div>
 
     <div typeof="rdf:Property" resource="http://schema.org/parentService">
@@ -188,6 +193,7 @@
       <span property="rdfs:comment">A broadcast service to which the broadcast service may belong to such as regional variations of a national channel.</span>
       <span>Domain: <a property="http://schema.org/domain" href="http://schema.org/BroadcastService">BroadcastService</a></span>
       <span>Range: <a property="http://schema.org/range" href="http://schema.org/BroadcastService">BroadcastService</a></span>
+      <span>Equivalent property: <a property="owl:equivalentProperty" href="http://purl.org/ontology/po/parent_service">po:parent_service</a></span>
     </div>
 
     <div typeof="rdf:Property" resource="http://schema.org/area">
@@ -195,6 +201,7 @@
       <span property="rdfs:comment">The area within which users can expect to reach the broadcast service.</span>
       <span>Domain: <a property="http://schema.org/domain" href="http://schema.org/BroadcastService">BroadcastService</a></span>
       <span>Range: <a property="http://schema.org/range" href="http://schema.org/Place">Place</a></span>
+      <span>Equivalent property: <a property="owl:equivalentProperty" href="http://purl.org/ontology/po/location">po:location</a></span>
     </div>
 
     <div typeof="rdf:Property" resource="http://schema.org/broadcaster">
@@ -202,6 +209,7 @@
       <span property="rdfs:comment">The organization owning or operating the broadcast service.</span>
       <span>Domain: <a property="http://schema.org/domain" href="http://schema.org/BroadcastService">BroadcastService</a></span>
       <span>Range: <a property="http://schema.org/range" href="http://schema.org/Organization">Organization</a></span>
+      <span>Equivalent property: <a property="owl:equivalentProperty" href="http://purl.org/ontology/po/broadcaster">po:broadcaster</a></span>
     </div>
 
     <div typeof="rdf:Property" resource="http://schema.org/logo">
@@ -221,6 +229,7 @@
       <span class="h" property="rdfs:label">Broadcast event</span>
       <span property="rdfs:comment">An over the air or online broadcast event.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/PublicationEvent">PublicationEvent</a></span>
+      <span>Equivalent class: <a property="owl:equivalentClass" href="http://purl.org/ontology/po/Broadcast">po:Broadcast</a></span>
     </div>
 
     <div typeof="rdfs:Class" resource="http://schema.org/OnDemandEvent">
@@ -260,6 +269,7 @@
       <span property="rdfs:comment">A broadcast service associated with the publication event</span>
       <span>Domain: <a property="http://schema.org/domain" href="http://schema.org/PublicationEvent">PublicationEvent</a></span>
       <span>Range: <a property="http://schema.org/range" href="http://schema.org/BroadcastService">BroadcastService</a></span>
+      <span>Equivalent property: <a property="owl:equivalentProperty" href="http://purl.org/ontology/po/broadcast_on">po:broadcast_on</a></span>
     </div>
 
   </body>