--- a/model/working-copy/wd5-prov-dm-derivation.html	Thu Mar 08 15:44:41 2012 +0000
+++ b/model/working-copy/wd5-prov-dm-derivation.html	Thu Mar 08 15:49:36 2012 +0000
@@ -266,7 +266,7 @@
 <li><em>id</em>:  an OPTIONAL identifier  for a derivation;</li> 
 <li><em>generatedEntity</em>: the identifier (<span class="name">e2</span>) of the entity generated by the derivation;</li>
 <li><em>usedEntity</em>: the identifier (<span class="name">e1</span>) of the entity used by the derivation;</li>
-<li><em>activity</em>: an OPTIONAL identifier for the activity using and generating the above entities;</li>
+<li><em>activity</em>: an OPTIONAL identifier (<span class="name">a</span>) for the activity using and generating the above entities;</li>
 <li><em>generation</em>: an OPTIONAL identifier for the generation (<span class="name">g2</span>) involving the generated entity and activity;</li> 
 <li><em>usage</em>: an OPTIONAL identifier for the usage (<span class="name">u1</span>) involving the used entity and activity;</li> 
 <li><em>attributes</em>: an OPTIONAL set of attribute-value pairs that describe the modalities of this derivation.</li>