--- a/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Invalidation.ttl	Tue Feb 12 09:27:34 2013 -0500
+++ b/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Invalidation.ttl	Tue Feb 12 09:36:34 2013 -0500
@@ -15,7 +15,7 @@
    prov:qualifiedInvalidation [
       a prov:Invalidation;
       prov:activity    :swissair_Flight_111_crash;
-      prov:atTime      "1998-09-02T01:31:00Z";
+      prov:atTime      "1998-09-02T01:31:00Z"^^xsd:dateTime;
       prov:atLocation  <http://purl.org/twc/location/Swissair-Flight-111-crash>;
    ];
 . 
@@ -34,6 +34,6 @@
 :swissair_Flight_111_crash 
    a prov:Activity;
    prov:used          <http://dbpedia.org/resource/Swissair_Flight_111>;
-   prov:startedAtTime "1998-09-02T01:31:00Z";
+   prov:startedAtTime "1998-09-02T01:31:00Z"^^xsd:dateTime;
    prov:atLocation    <http://dbpedia.org/resource/Atlantic_ocean>;
 .

--- a/examples/eg-24-prov-o-html-examples/rdf/create/rdf/property_invalidatedAtTime.ttl	Tue Feb 12 09:27:34 2013 -0500
+++ b/examples/eg-24-prov-o-html-examples/rdf/create/rdf/property_invalidatedAtTime.ttl	Tue Feb 12 09:36:34 2013 -0500
@@ -9,5 +9,5 @@
    a prov:Entity, ex:Painting;
    rdfs:label "Le Peintre"@fr, "The Painter"@en;
    prov:wasAttributedTo <http://dbpedia.org/resource/Pablo_Picasso>;
-   prov:invalidatedAtTime "1998-09-02T01:31:00Z";
+   prov:invalidatedAtTime "1998-09-02T01:31:00Z"^^xsd:dateTime;
 .