--- a/ontology/prov-o-html-sections/description-starting-points.inc.html Mon Jul 02 21:39:51 2012 -0400
+++ b/ontology/prov-o-html-sections/description-starting-points.inc.html Mon Jul 02 21:48:06 2012 -0400
@@ -13,7 +13,15 @@
</ul>
<p>The three primary classes relate to one another and to themselves using the properties shown in the following figure.</p>
- <p>Activities <strong>start</strong> and <strong>end</strong> at particular points in time (described using properties <a href='#startedAtTime' class="qname">prov:startedAtTime</a> and <a href='#endedAtTime' class="qname">prov:endedAtTime</a>, respectively). Activities can <strong>use</strong> Entities during their lifespan and can also <strong>generate</strong> other Entities (described using <a href='#used' class="qname">prov:used</a> and <a href='#wasGeneratedBy' class="qname">prov:wasGeneratedBy</a>, respectively). For example, a blog writing activity may use a particular dataset and generate a bar chart. When an Activity uses an Entity that was generated by another Activity, we say it <a href='#wasInformedBy' class="qname">prov:wasInformedBy</a> the other Activity. This allows provenance chains of just Activities, in addition to provenance chains of Entities linked by the Activities that used or generated them.
+ <p>Activities <strong>start</strong> and <strong>end</strong> at particular points in time (described using properties
+ <a href='#startedAtTime' class="qname">prov:startedAtTime</a> and <a href='#endedAtTime' class="qname">prov:endedAtTime</a>, respectively).
+ Activities can <strong>use</strong> Entities during their lifespan and can also <strong>generate</strong> other Entities (described using
+ <a href='#used' class="qname">prov:used</a> and <a href='#wasGeneratedBy' class="qname">prov:wasGeneratedBy</a>, respectively).
+ For example, a blog writing activity may use a particular dataset and generate a bar chart. Provenance chains of alternating Activities and
+ Entities can be created with usage and generation. In addiition, we can say that an Activity <a href='#wasInformedBy' class="qname">prov:wasInformedBy</a>
+ another Activity to provide some ordering information without explicitly mentioning the activities' start and end times.
+ Further, we know that the informed Activity used an Entity that was generated the informing Activity. Thus, the
+ <span class="repeated">prov:wasInformedBy</span> allows the assertion of provenance chains comprising only Activities.
</p>
<p>