adding xml example of hadPrimarySource based on http://www.w3.org/TR/prov-dm/#anexample-primary-source1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/eg-40-xml-examples-by-term/xml/PrimarySource.xml Sun Aug 19 23:30:17 2012 -0600
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- based on Example 32 from http://www.w3.org/TR/prov-dm/#anexample-primary-source1 -->
+<prov:records xmlns:prov="http://www.w3.org/ns/prov#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ex="http://example.com/ns/ex#">
+ <prov:entity prov:id="ex:la-campagne-de-Russie-1812-1813">
+ <prov:type>map</prov:type>
+ </prov:entity>
+ <prov:entity prov:id="ex:revue-d-Histoire-de-la-Pharmacie-t-XVIII">
+ <prov:type>journal</prov:type>
+ </prov:entity>
+ <prov:dependencies>
+ <prov:hadPrimarySource>
+ <prov:derived prov:ref="ex:la-campagne-de-Russie-1812-1813"/>
+ <prov:source prov:ref="ex:revue-d-Histoire-de-la-Pharmacie-t-XVIII"/>
+ </prov:hadPrimarySource>
+ </prov:dependencies>
+</prov:records>