fixed indentation.
--- a/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Activity.ttl	Sun Apr 15 13:27:07 2012 -0400
+++ b/examples/eg-24-prov-o-html-examples/rdf/create/rdf/class_Activity.ttl	Sun Apr 15 13:28:31 2012 -0400
@@ -7,9 +7,9 @@
 :graduation
    a prov:Activity, :Graduation;
    prov:startedAtTime "2012-04-15T13:00:00-04:00"^^xsd:dateTime;
-   prov:used      :ms_smith;
-   prov:generated :doctor_smith;
-   prov:endedAtTime "2012-04-15T14:30:00-04:00"^^xsd:dateTime;
+   prov:used          :ms_smith;
+   prov:generated     :doctor_smith;
+   prov:endedAtTime   "2012-04-15T14:30:00-04:00"^^xsd:dateTime;
 .
 :ms_smith     a prov:Entity .
 :doctor_smith a prov:Entity .