--- a/rdf-primer/index.html	Wed Nov 27 15:47:53 2013 +0100
+++ b/rdf-primer/index.html	Wed Nov 27 15:50:10 2013 +0100
@@ -371,7 +371,7 @@
       writing down RDF statements. In addition, it is sometimes handy to
       be able to talk about resources which have no identifier. For example, we might
       want to state that the Mona Lisa painting has in its background
-      an unidentified tree which we know to be of a cypress tree.
+      an unidentified tree which we know to be a cypress tree.
       Resources such as the unidentified cypress tree are called <a
       href="http://www.w3.org/TR/rdf11-concepts/#section-blank-nodes">"blank 
       nodes"</a> in RDF. </p>
@@ -485,7 +485,7 @@
     constructs in RDF Schema are listed in the table below:
 
     <p class="issue">
-    TPDO: rephrase/extend the above based on Pat's comments
+    TODO: rephrase/extend the above based on Pat's comments
     </p>
 
 <table id="table-rdf-schema">