--- a/model/ProvenanceModel.html	Tue Nov 29 13:46:31 2011 +0000
+++ b/model/ProvenanceModel.html	Tue Nov 29 15:41:19 2011 +0000
@@ -1384,12 +1384,14 @@
 
 <p>To this end, PROV-DM offers two kinds of records. The first, introduced in this section, represents an association between an agent and an activity; the second, introduced in <a href="#record-responsibility">Section Responsibility record</a>, represents the fact that an agent was acting on behalf of another, in the context of an activity. </p>
 
+<p>Examples of activity association  include designing, participation, initiation and termination, timetabling or sponsoring. </p>
+
 <p>An <dfn id="dfn-activity-association">activity association record</dfn>, written <span class="name">wasAssociatedWith(a,ag2,attrs)</span> in PROV-ASN, has the following constituents:</p>
 <ul>
 <li><em>id</em>:  an OPTIONAL identifier  <span class="name">id</span> identifying the activity association record;</li> 
 <li><em>activity</em>: an identifier <span class="name">a</span> for an activity record;</li>
 <li><em>agent</em>: an identifier <span class="name">ag2</span> for an agent record, which represents the agent associated with the activity;</li>
-<li><em>attributes</em>: a set of attribute-value pairs <span class="name">attrs</span> that describe the modalities of usage of this entity by this activity.</li>
+<li><em>attributes</em>: a set of attribute-value pairs <span class="name">attrs</span> that describe the modalities of association of this activity with this agent.</li>
 </ul>
 
 <p>In PROV-ASN, an activity association record's text matches the <span class="nonterminal">activityAssociationRecord</span> productions of the grammar defined in this specification document.</p>
@@ -1399,8 +1401,8 @@
 <span class="name">wasAssociatedWith</span>
 <span class="name">(</span>
 <span class="optional"><span class="nonterminal">identifier</span>,</span>
-<span class="nonterminal">identifier</span>,
-<span class="nonterminal">identifiers</span>,
+<span class="nonterminal">aIdentifier</span>,
+<span class="nonterminal">agIdentifier</span>,
 <span class="nonterminal">attribute-values</span>
 <span class="name">)</span>
 </div>